1PC Black Keyless Drill Chuck 3/8" 24UNF+1/4" SDS Hex Chuck 0.8-10mm AdapterFeature: -Unique patented locking function, breaking traditional locking methods. -After the ratchet, the locking components mounted on the rear collet, locking circumferential length, more effective in preventing loose removal, the collet is more reliable when gripping means. -Good metal with texture, comfortable sweatshirt. -Torque thrust bearing unique eExerted traction translates into greater clamping force. -Range: suitable for 1050W more power hammer drill. Specifications: Product Name: Drill Chuck Material: High Speed Steel Color: Black & Silver Length: Approx. 85mm/3.34" Shank Diameter: Approx. 6mm/0.23" Clamping Range: 0.8-10mm/0.031"-0.39" Quantity: 1Pc Package Included: 1x Drill Chuck