Practical to use: the dog training collar covers can be applied to the dog shock collar, dog training collar, etc., and it is simple to use, just insert them into the pin of the pinch collar, then adjust and fix them | Quality material: made of quality rubber material, the dog pinch collar cover is soft, reliable and reusable, which is not easy to break, fray or shrink, hard and long-lasting to use, giving a comfort for your dogs | Size information: there are 3 different sizes (13 mm, 16 mm and 20 mm high) for you to opt for, 13 mm for 10 mm contact points, 16 mm for 13 mm contact points, and 20 mm for 17 mm contact points; If the dog is a short-haired dog, then 13 mm is suitable, if the dog has extra long hair, then 20 mm is nice | Easy to use: the dog pinch collar rubber tips are designed to protect your pet's fur and skin; Just simply place the silicone rubber cover over the metal fork of the collar to avoid the pointed parts contacting with the dog's skin | Sufficient quantity: the package contains 24 pieces of dog prong collar rubber tips in black color, coming with 3 sizes, and 8 pieces for each size, sufficient quantity can meet your dog's daily needs and replacements