Description:

High hardness and wear resistance, convenient and fast to drill a hole, offer superior cutting power and durable.. Three Pointed design can quickly and accurately drill a hole. Edge sharpness and smooth drilling.Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.. Hexagonal key combination or adjustment of reverse sleeve depth and drilling depth to adapt to screws of different lengths, easy to use. Can perfectly remove five bevels.. Suitable for bench drills, hand drills and conventional electric drills. Suitable for wood, fiberboard, particle board, plywood, plastic, PVC, rubber, etc.. The Countersink Drill Bit Set is includes 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm and 1 free Hex Key Wrench..