Universal Drive hex shank for easy access to electric screwdrivers. Quickly convert any 1/4 inch cordless electric screwdriver into a drill or grinder. One-handed operation ensures efficient and secure performance. 1/4 inch hex shank - universal fit for 1/4 inch electric screwdrivers Converts cordless screwdrivers into a drilling or grinding tool One-handed operation for improved control and convenience 0.3-6.5mm capacity - compatible with drill bits from 0.3mm to 6.5mm, ideal for precision work not achievable with standard chucks Color: Silver + Black Material: Aluminum alloy + carbon steel Dimensions: - 90mm long hexagonal handle chuck, clamping range: 0.3mm - 6.5mm, with 1/4 inch (6.35mm) shank - 57mm long hexagonal handle chuck, clamping range: 0.3mm - 3.6mm, with 1/4 inch (6.35mm) shank - 61mm long round handle chuck, clamping range: 0.3mm - 3.4mm, with 1/8 inch (3mm) shank - 59mm long round handle chuck, clamping range: 0.3mm - 3.4mm, with 1/16 inch (2.35mm) shank Package Includes: 4 x Drill Chuck Quick Change Adapter Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3cm.