Description <br> Description: <br> Helps to install the sleeve, add versatility to power drills,good for converting <br> It can convert the original hexagonal to a square head <br> This 3pc Power Extension Socket Adaptor has Hex a bit for all power drill chucks <br> Comes in 3 Sizes: 1/4 inch, 3/8 inch and 1/2 inch for your full range of sockets <br> Suitable for mounting on pneumatic screwdrivers, electric screwdriver, air drill, drill drill, hand screwdrivers etc <br> <br> Specification: <br> Material: Carbide Steel <br> Shank Diameter: 1/4 (6.35mm) Hex Shank <br> Size: Approx. <br> Head length: 1/4 Full length: 65mm; Square head side length: 6.35mm <br> Head length: 3/8 Full length: 65mm; Square head side length: 9.53mm <br> Head length: 1/2 Full length: 72mm; Square head side length: 12.7mm <br> Package Includes: <br> 3 pieces Socket Bit Adapter <br> Note: <br> The colors may be different for the different display, please understand <br> Please allow 1-3mm error due to manual measurement, make sure you do not mind before you bid <br>