6pcs 8/10mm Shank Countersinks Reamer Bit Set Screw Woodworking Extractor 90 Degree Chamfer Countersink Hole Woodworking Knife MillingFeature:It is made of alloy, with high hardness, strong cutting force and durability. It is widely used in DIY, household and general construction or engineering. Drill smooth holes quickly and accurately. It is well centered and does not slip. The five-arm chamfering design automatically and quickly discharges chips in the holes on both sides, effectively preventing the accumulation of debris and improving drilling efficiency. This countersunk drill bit set includes a hex wrench that can be used to adjust the back sleeve depth and drill depth of screws of different lengths. Complete specifications to meet all your needs. Compatible with drills with chucks for drilling holes in wooden or wooden floors. It is recommended to use the central positioning of the punch before drilling to keep the drill upright to prevent it from bending or breaking. Each drill bit comes with a plastic box marked with dimensions for easy identification and storage. Specification:Material:AlloySize: 2.8x8, 2.8x10, 3x8, 3x10, 3.2x8, 3.2x10Quantity: 6pcsNote:Due to different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-2cm measuring deviation due to manual measurement.6 X Countersinks Reamer Bit Set