Features: 100% Brand new and high quality. Straight shank design is more suitable for many electric drills and drilling machines(here is not included). Sharp and twisted flute will make the drilling be more easy and effortless. Suitable for wood aluminum plastic etc. Specifications : Material: 6542 steel Quantity: 10 drill bits Design: Straight Shank Diameter: 0.5-3.0mm Package include: 10pcs x Twist Drill Bits