Coastal Pet Titan Metal Extra Heavy Chain Dog Leash / Lead with Black Nylon Handle (4 mm, 4 ft.) Titan Chain Dog Leash with Nylon Handle, 4 mm, black. Length: 4'. Features the security of superior quality chain and comfort of sturdy nylon web. The chain is argon welded and chrome plated for maximum strength and durability. Titan chain will not tarnish, rust or break.