Safe & Responsible Training
Recommended for use under the guidance of a qualified trainer. Please browse our list of recommended dog trainers.
2.25mm Prong – Twin O-Ring (Curogan)
A great piece of equipment to begin teaching your dog the foundation of following leash pressure, the Herm Sprenger 2.25mm Ultra-Plus prong collar is a tool that provides clear communication between dog and handler. The collar itself has blunt, rounded prongs that spread pressure evenly around the neck, instead of one pressure point on the trachea like a flat collar. We only supply genuine Herm Sprenger prong collars — German-engineered and the standard trusted by working and sport handlers worldwide — with the Ultra-Plus centre-plate for a smooth, secure fit. Fitted correctly and used with guidance, it can make your walks enjoyable again.
Best for most medium dogs — the everyday all-rounder — think spaniels, collies, Staffies and similar. The 2.25mm is the go-to first prong for the average pet dog, in Curogan — Herm Sprenger's nickel-free copper alloy that's kind to skin-sensitive dogs and won't rust. Choose your gauge by your dog's strength, not neck size — length is set by adding or removing links.
Twin O-Ring or Swivel D-Ring — which should I choose?
Both attach your lead to the same collar; the difference is how the pressure feels and how the lead sits.
- Twin O-Ring — two rings give you a choice. Clip to both rings for a softer, limited-cinch action (the "dead ring" setup most handlers use day to day); clip to the single live ring for a fuller, more direct tightening action when you want clearer feedback. The versatile, adjustable option.
- Swivel D-Ring — a single ring on a swivel that turns freely so your lead never twists or tangles. A clean, direct connection, ideal for dogs that move around a lot, switch sides, or work on a long line.
This collar is the Twin O-Ring version.
CORRECT USE & FITTING
A prong collar only works when it's fitted correctly — worn wrongly it's both useless and unkind.
- In most cases the collar should sit high on the neck, right behind the ears and up under the jawline.
- Fit it snug by adding or removing links so it sits high and level — never buy a bigger collar and leave it loose.
- Match the gauge to your dog's size, not to the collar's length.
- Always run a backup: a safety clip or coupling strap to a flat collar, so your dog is never held by the prong alone.
- Generally we would not recommend prong collars for dogs under 7–9 months.
- New to prong collars? Work with a qualified balanced trainer. A prong supports training — it isn't a shortcut.
As with any training tool, you must condition the dog to the tool to ensure the best results. Applying a prong collar will not magically fix your dog's pulling issues, but when introduced and conditioned properly, it can improve and build strong communication between you and your dog.
We do not condone the improper use of our training prong collars. We strongly recommend seeking professional advice before utilising any training tool. To browse our list of dog trainers and behaviourists, please click here.
Standard Shipping:
• Estimated Delivery Time: 2-3 business days
• Shipping Cost: £3.99
Express Shipping:
• Estimated Delivery Time: 1-2 business days
• Shipping Cost: £5.99
• International Shipping: International shipping rates and delivery times vary based on location and will be calculated at checkout.
Please note that delivery times are estimated and may vary depending on your location and unforeseen circumstances like weather or carrier delays.
Shipment Confirmation & Order Tracking
Once your order has shipped, you will receive a confirmation email with a tracking number. You can track your order using the provided link or directly on our website under the “Track My Order” section.
Shipping Policy
At K9 Corner, we are committed to delivering your orders quickly and efficiently. Please take a moment to review our shipping policy to understand how we handle orders, delivery times, and costs.
Processing Time
• All orders are processed within 1-2 business days(excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.
• In the event of a high volume of orders, processing may take an additional 2-3 days. If there are significant delays, we will notify you via email or phone.
Shipping Rates and Delivery Estimates
We currently offer the following shipping options:
Standard Shipping:
• Estimated Delivery Time: 2-3 business days
• Shipping Cost: £3.99
Express Shipping:
• Estimated Delivery Time: 1-2 business days
• Shipping Cost: £5.99
Shipping to P.O. Boxes
We currently do not ship to P.O. boxes. Please provide a physical address to ensure smooth delivery.
Customs, Duties, and Taxes (International Orders)
You are responsible for paying any duties or taxes upon import.
Delayed or Lost Packages
If your order is delayed or goes missing, please contact us at support@k9-corner.co.uk with your order number and details. We will work with the shipping carrier to resolve any issues as quickly as possible.
Incorrect Shipping Information
Please ensure all shipping details are correct before completing your purchase. K9 Corner cannot be held responsible for packages sent to incorrect addresses due to errors made at checkout.
Contact Us
If you have any questions or concerns regarding our shipping policy, please don’t hesitate to reach out to us at support@k9-corner.co.uk.
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
- To start a return, you can contact us at support@k9-corner.co.uk
- You will need to notify us that you wish to return the item and state the reason for the return.
- Returns should be made to the returns address provided on the parcel.
- We strongly recommend using a tracked service to return your item.
- Once the item has been returned your funds will be returned.
Items sent back to us without first requesting a return will not be accepted. We recommend using Royal Mail Tracked services for all returns.
You can always contact us for any return questions at support@k9-corner.co.uk.
Return Shipping Costs
Customers are responsible for the cost of return shipping. We do not cover or reimburse return shipping fees.
We recommend using a trackable shipping method to ensure your return reaches us safely. We are not responsible for returns that are lost or damaged during transit.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Remote Collar Returns & Inspection Policy
Remote training collars are classified as specialist electronic training equipment and all returned units undergo a full inspection, functionality test, and condition assessment before being accepted back into stock.
Where a remote collar has been opened, paired, activated, worn, used outdoors, or shows signs of handling beyond what would reasonably be expected when inspecting the product, a restocking and inspection fee of up to 10% may be deducted from the refund amount.
This fee contributes towards:
- Product inspection and testing
- Sanitisation and repackaging
- Firmware and functionality checks
- Administration and processing costs
- Reduction in resale value of opened electronic equipment
To qualify for a full refund, returned items must be:
- In “as new” condition
- Free from marks, damage, hair, dirt, odours, or outdoor use
- Returned with all original packaging, accessories, manuals, chargers, and contents
Returns that are damaged, incomplete, excessively used, or not in resalable condition may either:
- Be subject to a reduced refund reflecting the loss in value, or
- Be returned back to the customer
This policy does not affect your statutory rights. Faulty or defective items will be handled in accordance with the Consumer Rights Act 2015.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at support@k9-corner.co.uk.
International Orders — Please Read Before You Order
Your order is shipped from the UK. Because it's an export, no UK VAT is charged — the price you pay us does not include any UK tax.
When your parcel arrives in your country, it will pass through your local customs. At that point, your country's customs authority may charge import duties, taxes or VAT before the goods can be released to you. These charges are set by your own government under your country's rules — they are not set by us, are not collected by us, and are separate from what you pay at checkout. Whether anything is charged, and how much, depends entirely on your country's import thresholds and rates.
You, as the receiver, are responsible for paying any customs charges to release your parcel. You may also be asked by your customs authority to provide information or documents (such as a tax/VAT/EORI number) to clear the shipment.
Please expect possible delays. Parcels are sometimes held at customs for inspection or processing. This is a normal part of international shipping and is outside our control — we cannot speed up or predict how long your customs will take.
Every order is fully tracked. You'll receive a tracking number so you can follow your parcel at every stage, including while it's with customs.
By placing an international order, you understand that any customs duties, taxes or carrier handling fees are your responsibility and are determined by your country's authorities, not by us.
How it compares
View full range → 1.5mm Micro
|  2.25mm
|  3.0mm Short-Link
| 3.2mm
| |
|---|---|---|---|---|
| Breed Size | Small | Medium | Medium-Large | Large |
| Neck Size Range | Up to 25cm | Up to 33cm | Up to 43cm | Up to 48cm |
| Dog Weight | Under 7kg | Up to 18kg | Up to 40kg | Up to 40kg |
| ClicLock Compatible | No | Yes | Yes | Yes |
| Links per Collar | 10 (5 per side) | 10 (5 per side) | 14 (7 per side) | 10 (5 per side) |
