Material of This Dog Collar: Pure 18K gold over the 316L stainless steel chain, and gold is 20X thicker than other regular plated chain. High strength and hardness, heavy, durable, no rust, no tarnished for years of use We designed a special snap buckle for your dog, please check the details showing in the picture. It is easy to lock and unlock the clasp, but it is very strong that cant be pull it apart even with 700lbs of force Who Need this Chain Collar: Do you have a chewy dog? If yes, this collar is perfect The luxurious cuban link chain collar looks cool on both boy and girl dogs. 15MM wide, and 12inch to 24inch, it is for Small Medium and large dogs like Rottweiler, Pitbull, American Bully, German Shepherd, Husky, Newfoundland, Belgian Malinois, Pitsky Saint Bernard, English Bull and so on. What Does This Chain Like: Training Walking Chain is solid and heavy because it is not hollow. High polished craftsmanship makes the surface shinny and smooth, comfortable, so we believe your dog will be happy to own this collar. The welded stainless steel D-ring for attaching tags and dog leash, it is very strong and never worry about breaking down.