Description: Fits all 1/4" hex screwdriversQuick change composite taper, uses drill bits with edge alkali. Drilling and tapping in one single-step processing, greatly save processing steps and time costs, improve work efficiency. Self-centering point, no need for auxiliary center drilling or central punching. High hardness, rust-proof, solid and . Color: As the picture Size: 4, 5, 6, 8, 10mm 1/4" (6.35mm) Hex Handle Material: High Carbon Steel Quantity: 1 Set (5 pcs)Note: Please allow 1-2mm differs due to manual measurement, thanks. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you! Package Included:5pcs 1/4" Hex Shank Wood HCS Drill Bit Set 4 5 6 8 10mm Quick Change Metal Tools