Combination Drill and Tap Set Number of Pieces 18 Tap Type Spiral Point Drill Bit Material High Speed Steel Drill Bit Finish Bright (Uncoated) Drill Bit Dia Included #21 #25 #29 #36 #7 27/64 in 5/16 in F U Measurement System Fractional Inch Impact Rated No Smallest Drill Bit Dia #36