Product name: Two-color automatic retractable retractor Main material: 304 stainless steel movement/ABS case/high-strength polyester Easy to walk the dog with automatic leash, no stuck | anti-stretching │ strong load-bearing Manual lock, just one touch, you can stop emergency, to prevent the dog from running around uncontrollably.R Stainless steel movement, tested many times, durable and stand the test of time. Non-slip handle, non-stick non-slip rubberized handle, close to handshake habit, designed to feel comfortable and not fatigued.