Herm Sprenger Prong Dog Training Collar, 26–31 in, 4 mm Chrome-Plated Steel

Herm Sprenger’s German-made prong collar is designed for dog training and behavior correction, with 4 mm prongs and a fit for extra-large dogs with 26–31 in (66–79 cm) necks.

• Chrome-plated steel links — provide the collar’s metal construction for training use.
• Quick-release Cliclock buckle — makes fastening and release simpler.
• Added O-ring — provides another attachment point on the collar.
• Adjustable links — let you alter the fit to suit your dog’s neck.
• Even-pressure design and trainer endorsement — support its intended role in correction training.

This collar is made for handlers training extra-large dogs and looking for a prong-style collar with a quick-release fastening. Its combination of adjustable links, a Cliclock buckle and an O-ring brings together fit adjustment and convenient handling in one training collar. The German-made Herm Sprenger construction is paired with US-added enhancements.

What is the Herm Sprenger collar designed to do?

The Herm Sprenger prong collar is intended for dog training and behavior correction. Its linked construction is designed to distribute pressure evenly around the collar, while top trainers endorse it for training use. The pressure-based design is the mechanism behind its correction function; it is not a promise of a particular training outcome.

• Made for training sessions and walks where a correction collar is being used.
• Designed to apply pressure across the collar rather than relying on a single narrow contact point.

How do I choose the right fit?

Choose this Herm Sprenger collar for an extra-large dog whose neck measures 26–31 in (66–79 cm). Measure your dog’s neck, add 2 in (5.1 cm), then adjust the links as needed for the intended fit. The collar’s links can be adjusted, so the fit is not limited to an unalterable fixed length.

• Measure around your dog’s neck before choosing this size range.
• Adjust the links to refine the fit after measuring.

What is the collar made from?

The Herm Sprenger collar uses chrome-plated steel links with 4 mm prongs. It is manufactured in Germany and carries the HS Herm. Sprenger Germany authenticity marking. The durable linked construction is designed for continued training use, while the US-added enhancements add the quick-release buckle and O-ring to the German-made collar.

• Chrome plating covers the steel collar links.
• The 4 mm prong specification identifies the prong size.

How do the Cliclock buckle and O-ring work?

The Herm Sprenger collar combines a quick-release Cliclock buckle with an O-ring for convenient fastening and attachment. The buckle opens and closes the collar without requiring the links to be adjusted each time it is put on or removed. The O-ring is an added collar feature, and the quick-release design is intended to make handling straightforward and help avoid tangling during walks.

• Use the Cliclock buckle for quick release.
• The collar includes an O-ring as part of its fastening setup.

This Herm Sprenger collar is suited to handlers training extra-large dogs with necks in the stated range who want adjustable links, a quick-release clasp and a prong-style correction design. Its German manufacture, chrome-plated steel links and added Cliclock and O-ring features define its use as a training collar for that fit.