Center Drill Bit, Core Drill Bit, Countersink Drill Bit, Twist Drill Bit. 246PCS Drill Bit Tool Set.40.528.66.5 CM. Metal, wood, tile, concrete drilling, etc. Wood, plastic, aluminum alloy, etc. Straight shank design is more suitable for many electric drills and drill machine (not included).
Sharp and twisted flutes will make drilling easier. It is suitable for wood, aluminum, plastic or other materials. Ideal for DIY, family and general building / engineering use.