Herm Sprenger Prong Collar Position
Herm Sprenger Prong Collar Position Size
Herm Sprenger Prong Collar Position
Herm Sprenger Prong Collar Position Size

Herm Sprenger Stainless Steel 3.2mm Ultra Plus - Twin O Ring Prong Collar

£38.00

The Herm Sprenger 3.2mm Ultra-Plus Twin O Ring Prong Collar is the brand's heavy-duty gauge — built for medium-to-large working and sport dogs where pulling commitment and neck circumference both demand more reach and durability.

Made in Germany from precision-cast components, the 3.2mm wire pairs with the centre-plate configuration first pioneered on Herm Sprenger's Neck Tech range. The twin O ring setup gives you flexibility on the lead — clip a single ring for standard correction, or both rings together for more direct, two-point feedback in high-drive or distraction work.

Best suited to larger dogs between 25kg+ — full-size German Shepherds, larger Belgian Malinois, Boxers (full frame), Rottweilers (smaller frame), Dobermans, Standard Poodles, larger Vizslas and Weimaraners, and similarly-sized working and sport breeds.

Common use cases:

  • Heel work and obedience for medium-to-large dogs
  • Reactive and redirected-aggression handling
  • Sport, protection, and working-line training
  • Stronger pullers where lighter gauges flex too much under load

Please note: As with any training tool, you must condition the dog to the tool to ensure the best results. Training tools and equipment do not magically fix issues, but when introduced and conditioned properly, 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.

Features & Benefits
  • Built in Germany — over a century of refinement in prong-collar engineering, the standard among professional balanced trainers.
  • 3.2mm wire gauge — heavy-duty strength for medium-to-large working and sport dogs in the 25-40kg range.
  • Twin O-Ring configuration — single ring for everyday correction, or both rings together for direct two-point feedback in higher-distraction work.
  • Centre-plate design — pioneered on Herm Sprenger's Neck Tech range, distributes pressure evenly across precision-cast prongs.
  • Resize with links — base collar fits necks up to 48cm; add or remove individual middle links for a precise fit.
More Info

How the Twin O-Ring works.

  • The Twin O-Ring configuration gives you two attachment points on the collar — one on each side. Standard use is to clip your lead to a single ring for everyday correction, but you can attach both rings simultaneously for more direct, two-point feedback in higher-distraction work or when introducing the collar to a new dog. Many trainers use the dual-ring setup during initial conditioning when the dog needs the clearest possible feedback, then transition to single-ring for everyday handling once the conditioning is established.

Which dogs this fit?

  • The 3.2mm gauge is built for medium-to-large working and sport dogs in the 25-40kg range. Typical breeds: full-size German Shepherds, larger Belgian Malinois, Labrador Retrievers, Golden Retrievers, Boxers (full frame), Rottweilers (smaller frame), Dobermans, Standard Poodles, and similarly-sized working breeds. Base collar fits necks up to 48cm; add middle links to extend. If your dog has a neck under 41cm, the 3.0mm Short Link will give a more refined fit with the same training strength. If above 40kg or 48cm neck even with extension links, step up to the 4.0mm gauge.

Fitting

  • Position the collar high on the neck — behind the ears, just below the jawline — and aim for a two-finger fit when the lead is unweighted. Resize by adding or removing individual middle links (spare links ship with the collar) rather than letting the chain hang slack. Always pair the prong with a backup safety connection (flat collar and back-clip harness, or slip lead loop) — even a perfectly fitted prong can release if a link works loose, and the safety prevents an off-lead moment with a strong dog.

When not to use

  • This is a training tool, not a permanent walking collar. Do not use on dogs under approximately 7-9 months of age, for off-leash work, in crates, during travel, or on dogs with neck or thyroid conditions without veterinary clearance. If you're new to prong collars on a larger dog, work with an experienced balanced trainer for the first few sessions.
165
17