Features: *Both manual and pneumatic can be used *Industrial quality,made of material Chrome vanadium steel, very sturdy *The surface is with replicate sharpening treatment, strong anti-corrosion, make it demanding to rust, would be using a long time *With overall heat treatment Specifications: *Product Name: Socket Adapter *Material: Chrome vanadium metal *Color: Silver *Total length: 1/2: approx 67mm/2" 3/8: approx 55mm/2" 1/4: approx 45mm/1" *Quantity: 6 pieces Package Contents: 6*Socket Adapter Note: 1 The genuine colour of the thing may be slightly various from the pictures shown on web content caused by many factors resembling brightness of your computer screen and lightweight brightness 2 Please enable slight manual dimension deviation for the info