Blocky Dogs collars are designed for large and giant breed dogs (a.k.a. “Blockheads”) and working dogs. Special features include double-ply nylon webbing with an average strength of over 12,000 pounds! Two-inch nylon width lessens pressure on the dog’s trachea if they pull. Stainless steel, nickel-plated and brass hardware are used, all welded. The durable collars are double stitched and boast a double-tongue buckle. Most importantly, your big dog can get a perfect fit because collars are available in hard to find sizes, including half sizes.