1. Material: ABS 2. Weight: about 163 grams for 3 meters long, and about 230 grams for 5 meters long 3. Size: the length of the traction belt is about 3/5 cm 4. Application: dogs 5. Features: freely retractable, ABS plastic, sturdy and durable, one-button brake, easy to use, metal hook, not easy to rust, anti-knot design, smooth and smooth