Solid K9 Training Online Store

Prong Collar


Our 2.25mm (16″ length) and 3.0mm (22″ length) prong collars are HERM SPRENGER. Due to availability our 1.75mm prong collars are provided by another manufacturer and are NOT made by HERM SPRENGER. When choosing the correct size for your dog, measure your dog’s neck circumference and add an extra two inches. PLEASE NOTE: Just about every dog will fit a small or medium prong collar, we have never had to use anything larger and have trained dogs up to 200 lbs.

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World renowned as the professionals choice , the HERM SPRENGER line of German Steel ROUNDED TIP PINCH martingale design collars.

These prong collars will not harm the dog if used properly. The prongs are blunt on the end and go inwards towards the neck of the dog. The collars will tighten under pressure and will release pressure instantly.

*** Watch Jeff Gellman’s “Intro to Prong Collars” Video HERE.

Prongs unfasten to allow the collar to be placed on your dog. Links may be added or removed for proper fit.

Made in Germany.

Additional information


Micro-1.75mm, Small-2.25mm, Medium-3.0mm


  1. Peter P. (verified owner)

    Once you get educated on this collar and use it on your canine companion, you will notice the difference. With proper use and procedure you will see immediate change, and more communication immediately. Purchasing a second one because the 2.25 i bought for my 34 lb. chow was too small and i needed a few more links. Excellent training tool!

    • JGellman

      glad you found a tool that can help you

  2. John Marquez (verified owner)

    Just Wow! I have been studying your videos religiously working with my 120lb German Shepherd. I order the collar on wednesday and its saturday and I already received it. I fitted the collar snug and did the probg collar dance a few times and the pulling stopped!!! I havent been able to walk him in a structured manner in months since he came back home to me. Finally I see the light at the end of the tunnel. Next im gonna layer the e-collar for maximum results. Jeff Thank You from ghe bottom of my heart, both Hades and I appreciate all that you do. Much love!

    • JGellman


      so proud of you for advocating for your dog and making you and your dogs life so much better, keep it up jeff

  3. Keke cook

    I also bought one and these are great! My husband has issues with leaving them on all day. Is this okay? I told him it was but he was skeptical.

    • JGellman

      collar should not be on the dog when not working the dog

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