Dean & Tyler 18 to 21-Inch Strong Nylon Cobra Patch Collar With Felt Padding, Service Dog Patches, Small, Black Proudly Made In USA Massive Austrian Black Cobra Buckles; 2000 Pounds Tested; 10 Years Warranty D ring: Stainless Steel. Buckle: 7075 Aluminum; Brass clips; Stainless components. Easy Removable Velcro Patches S (Neck: 18" - 21", Width: 1-1/2")