Check the listing for details. USED-Herm Sprenger Black Stainless Steel Prong Dog Collar w/Quick Release Buckle. Color: Black, Condition: Used. Listed at 39.00 USD. PRODUCT INFORMATION: Herm Sprenger Black Stainless Steel Ultra-Plus Prong No Pull Collar with Central ClicLock Buckle.Design: This dog training collar model offers Herm Sprenger patented Click Lock buckle instead of a center plate for convenient application and removal of the collar from your dog’s neck; Traditional assembly chain assists with the dog training by tightening the collar when the dog pulls on the leashPerformance: Premium quality training collar for optimized communication with your dog; The collar should sit snugly under the dog’s ears and jawline; Properly fit pinch collar is safe for the dog and promotes positive and effective training experience; Fully rotational D-ring for leash attachmentUse and Functionality: For added safety, connect training prong collar with the backup collar; This pinch collar can be enlarged with extra middle links (purchased separately); To shorten the collar – remove desirable number of pronged linksMade in Germany: With precise German engineering, reliability, and quality by the world's foremost manufacturer of top-quality training collars; Locate HS-Germany stamp on the D-Ring as well as the fastening buckle 3.2mm -> fits up to a 19″ neck measurement2.25mm -> fits up to a 13″ neck measurement