Description:1\/4 Inch Hex Shank 0.8-10mm Drill Keyless ChuckSpecification:          Chuck Size Thread       3\/8"-24UNF           Chuck-in Diameter Range       0.8mm to 10mm           Material       Plastic+Metal           Diameter of Chuck       40mm\/1.57''           Height of Chuck       50mm\/1.96''           Size of Hex Chuck Adapter       L*Dia\/50*6mm\/1.96*0.23''          Features: With 1\/4" Hex Chuck Adapter. Suitable for 9.3mm axis. Durable and practical. Fast and stable.  Package Included: 1 x Chuck 1 x 1\/4" Hex Chuck Adapter  More Details: