Features: 1.Made of high quality brass, no tarnish, rust, or break, this dog training choke is excellent for gentle control. 2.The dog chain is made of high strength and durability, can withstand the strong dragging and pulling of large size dog. 3.Safe and effective way to train your dogs with this dog choke chain. 4.Designe d to tighten under tension, correct the wrong behavior by pulling the leash with a gentle but effective way. 5.Suitable for medium and large size dog. Specifications: Material: Metal Color: Yellow Size Options: Small, Large S: Steel wire diameter 3.0mm/0.12in, length 55cm/21.65in (Suitable for medium size dog) L: Steel wire diameter 4mm/0.16in, length 65cm/25.59in. (Suitable for large size dog) Package List: 1* Dog Chain Rope .