Trend SNAP/HKLC/6 Key Chuck Keyless chuck that can be used in quick chucks & impact drivers to hold parallel shank drills bits up to 1/4 inch. Clamping capacity: 0.8 mm (1/32 inch) to 6 mm (1/4 inch). Enhanced gripping power when compared to traditional key type drill chucks. Lightweight with plastic body. Fitted with Snappy shank 1/4 inch hex shank adaptor. Specifications: Shank diameter: 1/4 inch hex. Capacity: 0.8 mm to 6 mm.