Bado Choke Chain with Colored Rope Material: Chrome metal chain with nylon strap inside, polished manufacturing process at jewelry-grade steel level, never rusts. Size: 3 mm diameter. 60 cm (23.7 inches) total length. Modern and personal design: A completely new P choke training or walking collar. Fully certified welded links - ultra-strong links. P choke collar for training and exercising with your pet. Safe to use.