10 pcs 3.3mm HSS Electrical Drilling Twist Drill Bit
Straight shank twist drill bit, for electrical drilling working. use for drilling plastic, aluminum and metal. The flutes act as an Archimedean screw and lift swarf out of the hole. Shoule be use with electrical drillingmachine.(here is not included)
Title10 pcs 3.3mm HSS Electrical Drilling Twist Drill Bit