1. Material: carbon steel 2. Use: suitable for vehicle maintenance/home maintenance/factory maintenance, etc., with all kinds of ratchet wrenches, L-wrenches, torque wrenches, etc. 3. Carbon steel material forging, wear-resistant and durable 4. Fine workmanship, smooth surface, no burrs, smoother use 5. Various specifications for free choice, 10/12/13/14/15/17/18/19mm diameter 6. It can be used with 3/8-inch (10mm) square head L wrench extension, ratchet wrench 7. Weight: about 174g
