DRILL-19 drill bit, HSS, Number 19, .1660" diameter

DRILL-21 drill bit, HSS, Number 21, .1590" diameter, tap drill 10-32 thread

DRILL-21/64 drill bit, HSS, 21/64", .3281" diameter

DRILL-25 drill bit, HSS, Number 25, .1495" diameter, clearance drill No. 6 bolt or screw

DRILL-29 drill bit, HSS, Number 29, .1360" diameter, tap drill for 8-32 thread

DRILL-30 drill bit, HSS, #30, .1285" diameter, flute length 1-1/2

DRILL-31 drill bit, HSS, Number 31, .1200" diameter, tap drill 6-48 thread

DRILL-32 drill bit, HSS, Number 32, .1160" diameter

DRILL-33 drill bit, HSS, Number 33, .1130" diameter, tap drill 6-40 thread

DRILL-33-MM drill bit, HSS, 3.3mm diameter