DescriptionThis nut driver is made of premium material, which can withstand long-lasting use. Features the chromium-molybdenum steel material, which has high durability, not easy to deform. Fine workmanship, ensures practicality.Features-Color:Black -Material:Chromium-molybdenum steel -Size:7.80X2.50X2.50cm/3.07X0.98X0.98in Suitable bit: 14mm/18mm Socket handle: 1/2 inch - Perfect for use with breaker levers, ratchet handles and torque wrenches. - Extended design, high grade material, strong impact resistance, anti-rust treatment. - Overall heat treatment, high hardness, strong impact and torque resistance, blackened surface. - The size of the socket square head is 1/2 inch, durable, can withstand high torque, suitable for pneumatic tools. - Manufactured with professional technology to ensure the product can work for a long time.