5/8PCS HSS Hole Drill Reamer Set Woodworking Chamfer Bit Set 3-10mm Material: HSS4241+ No. 45 steel Drill size: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm Chamfer dia: 15.8mm. Color: metallic color. Style: Package A or B (optional) Products Features: ❶ HSS material: 2-in-1 countersink drill bits are made of high speed steel, QUENCHING treatment, so they are HIGH HARDNESS, WEAR-RESISTING and DURABLE. ❷ Three point drill design: The cutting flutes of the countersink drill bit is made of CNC gear grinding, the three-pointed bit is better in CENTERING and NO SKID .So the drilling is ACCURATE and FAST with HIGH EFFICIENCY. ❸ FLEXIBILITY, REMOVABLE and ADJUSTABLE: It’s convenient to use the combination of Hex Key to adjust or disassemble the countersink drill bit and the five-flutes chamfering. ❹CHIP REMOVAL QUICKLY: the wide chip slot and the five-flutes chamfering make the operation process faster to remove the sawdust, and the chamfering is more SMOOTH and UNBROKEN. ❺ Round handle design: handle is smooth without friction with the machine, and it’s suitable for Power Bench or Hand drill driver in the most common size. Package included: Package A: 5PCS(4pcs*Drill Bit(3/4/5/6mm)+1 *L Wrench) Package B: 8PCS(7pcs*Drill Bit(3/4/5/6/7/8/10mm)+1 *L Wrench) Note: Please allow 0.5-1cm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.