Item Type: Drill Tap Material: High Speed Steel Function: Used for drilling, tapping, chamfering. Tap Specifications: Approx. M3 x 0.5mm / 0.02in, M4 x 0.7mm / 0.03in, M5 x 0.8mm / 0.03in, M6 x 1mm / 0.04in, M8 x 1.25mm / 0.05in, M10 x 1.5mm / 0.06in Tap Shank Type: Hex Shank Tap Shank Size: 1/4in Package List 6 x Drill Tap When taps are used for drilling, please use protective equipment to prevent the debris from splashing and hurting yourself. 16Pcs in 1 Set: From M3 to M10, there are 10pcs drill tap in different sizes, meeting your needs for various screws. 2Spiral Flutes: Adopting spiral flute design, which ensures excellent chip removing effect for more efficient working. 3Broad Utility: Allows for flexible application in drilling, tapping, chamfering and so on, practical and reliable. 4Good Crafting: Made of high speed steel material with good hardness and durability against rusting, very reliable. 5Easy to Install: Comes with 1/4in hex shank, the installation is very easy and the connection is very firm as well.