Description:0.3-3.2mm 1\/4 Inch Hex Shank Keyless Conversion Chuck Adapter<br>Specification:<br> Clamping range: 0.3-3.2mm， shank are hexagonal， outer diameter 6.35mm (1\/4&amp;ldquo;)<br> Chuck specifications: M8*0.75mm<br> Electric grinder outer shaft diameter: 8mm， screw Pitch: 0.75mm<br> Chuck: #1 short type\/ #2 long type<br> Material: Aluminum<br> Color: Black  Features:<br> Keyless Drill Bit Chuck Adapter Converter Hex Shank Power Tool Quick Change.<br>   Instantly convert impact driver to hold non-quick change drill &amp;amp;  driver bits.   Quickly convert your quick change hex shank driver into a drill!   Keyless chuck finger-tightens for easy bit changes.   Unlimited Use in Automotives， Garages， Warehouses， Offices，  Homes etc.   Conversion Chuck Adapter for Power Impact Driver.    <br> Notice:<br> The chuck with spindle to use， please confirm your electric grinder.<br> How to determine whether can use: If your electric grinder outer shaft diameter measurement is 7.2mm-8mm， you can consider using 8 x 0.75 chuck. Please note that the package includes one chuck adapter only.  Package Included:1 x Keyless Conversion Chuck Adapter<br>More Details: