Features:* *Made of material, and practical to use*Designed for use in Impact drivers and wrenches*3/8" Drive so will fit any 3/8" drive ratchets / extensions / bars etc.*Nickel chrome plating resists corrosion and simplifies cleaning.*Heat treated vanadium steel for uniform hardness and strength.*Surface treatment: socket heat treatment chrome plating bit sandblasting heat treatmentSpecifications:*Material: Chrome vanadium steel*Model: 2mm / 3mm / 4mm / 5mm / 5.5mm / 6mm / 7mm / 8mm and 10mm*Total length:48mm*Color: As Pictures ShowPackage Contents:9*Hex Bit SocketsNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.