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Please feel free to email us with any questions if you cannot find the information you're looking for on this page.


The Anatomy of a Prong Collar

Featured: 3.0mm Chrome Herm Sprenger Prong collar.

All the prong collars include the martingale chain, two end links, eight total middle links, and a center plate.

The 2.25mm and 3.2mm Curogan collars come with two circle rings, no swivel.

Herm Sprenger Collar Information

*Note: some owners have reported discoloration on white coats from their collars. No full refunds on used items even for this reason. Please see refund and return policy for more information*

All collars and links purchased from us are genuine Herm Sprenger. These collars are also known as "pinch collars" or "training collars", but I personally refer to them as "prong collars".


Collar Materials
Chrome collars: steel chrome-plated
Black stainless steel collars: black coated stainless steel
Stainless steel collars: stainless steel metal
Curogan collars: copper-tin alloy which doesn't rust (but they will patina!) and great for dogs with sensitive skin or nickel allergies (there is nickel in chrome plating).
*Note: Stainless does not mean they will "stain less" on your dog. All collars have been reported to stain or darken some dog's white fur.

Curogan Care:
Curogan collars can patina (a green or brown film on the surface of bronze or similar metals, produced by oxidation over a long period), similar to any item made with copper such as a copper bottom pot or a US penny. This is completely normal, and you may slow this by drying your collar after an outing with your dog. If it's exposed to a lot of salt water or dirt, you may also rinse with water then give it a really good drying. This patina may darken the coat of a white or very light colored dog. You can certainly clean the copper in various methods. I've personally used the "boil in vinegar" option described in this article: How to clean copper
One of the great benefits of this copper collar is the ability to clean the patina in the future, and it corrodes at insignificant rates. With the chrome plated collars, you may clean the surface rust, but if left too long it can corrode quicker and basically eat the chrome plating and steel.

*CUROGAN COLLAR NOTICE*- The 2.25mm Curogan collars have a slightly thicker martingale chain than the black and chrome collars. The 2.25mm and 3.2mm Curogan collars do not have swivel d-rings on the chain.

More information:

  • Collars are sent with the buckle attached and center dividing plate is included within the package.

  • The black and curogan collars do not come in the 3.0mm size.

  • The 3.0mm and 3.2mm links are minimally different sizes and will fit into each other.

  • Please note: some owners have reported discoloration on white coats from their collars. No full refunds on used items even for this reason. Yes this is the fourth time mentioned on this page ;)

Prong Collar Safety
Always remove a prong collar if your dog is unsupervised, tied up, or playing with other dogs. The buckles and collars are not designed to come off on their own, but for any prong collar, (with a buckle or not), please use a safety back-up method in case your collar does come off during use. Katie's Buckles is not responsible for any damage or injuries. The customer assumes all risk and liability.

Sizing Guide

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