Tapered drill bit high-speed steel carpentry suitable for woodworking 40JEOOTDTY Features: made of industrial-grade high carbon steel, strong hardness ensures sharp edges, high strength. The drilling length can be adjusted for different screws by simply loosening and tightening the set screws. The bevel is 5 flutes, which can discharge the wood faster, smooth, flat in the working process. Suitable for aluminum, wood (hardness less than 25 degrees) and plastic, ideal for fabrication, maintenance or portable drilling work. Ideal for wooden boards, fiberboard, particleboard, plywood, plastic, pvc and soft metals. Specification: Material: HSSyp: 4/7pcs (optional)Package Included: 4x Reaming Drill Bit Parts Set or 7x Reaming Drill Bit Parts SetNote: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.