Neiko 10138B M2 Steel Coarse Tap and Drill Bit Set (18 Piece),Ridgerock Tools Inc.,10138B" /> Constructed from HSS M2 steel that is fit for a wide variety of applications Easily complete hole drilling, tapping, and deburring with this complete set Used on a variety of materials including steel, copper, brass, aluminum, and even plastic Comes stored in a convenient case for easy storing and identification Set includes: 9 taps: 6-32UNC, 8-32UNC, 10-24UNC, 10-32UNC, 1/4-20UNC, 5/16-18UNC, 3/8-16UNC, 7/16-14UNC, 1/2-13UNC and 9 drill bits: 27/64", U, 5/16", F, 7, 21, 25, 29, 36