Each socket has a drilled end for easy ball bearing retention for use on ratchets and switch bars. True impact for exceptional strength and durability. The tool perfect for the professional , mechanic, or DIY enthusiast Plug Drive Size: 1/2 inch square drive All plugs are stamped with sizes for easy identification colour: black Material: chrome steel size: length 78mm Package Contents: 8 x Socket(T30/T40/T45/T50/T55/T60/T70/T80) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.