Three-flute design spreads cutting loads over a larger area so holes are cleaner and rounder. The bit itself will last longer too. Designed for cutting hard metals: stainless, nickel steel alloys, titanium plus, great on soft metals too.
SPECS:
#28, .1405" (3.6mm) dia., 1-7/8" (4.8cm) long. #29, .1360" (3.45mm) dia., 2" (4.8cm) long. #31, .120" (3mm) dia., 1-15/16" (4.9cm) long. #33, .1130" (2.87mm) dia., 1-7/8" (4.8cm) long.
Catalog page 453