SAE National Coarse Tap and Drill Set.
Premium quality and a must have set.
Set includes: UNC 6-32 Tap #36 Drill, 8-32 #29,
10-24 #25, 10-32 #21, 1/4-20 #7, 5/16-18 #F,
3/8-16 #5/16, 7/16-14 #U, 1/2-13 #27/64.
M2 High Speed steel, 135degree Split point.