Constructed with a titanium coating to extend tool life, this step drill bit produces cylindrical holes in 13 different sizes ranging from 1/8" (3.2 mm) to ½" (12.7 mm) The bit includes increments of 5/32" (4 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), ¼" (6.4 mm), 9/32" (7.1 mm), 5/16" (7.9 mm), 11/32" (8.7 mm), 3/8" (9.5 mm), 13/32" (10.3 mm), 7/16" (11.1 mm), and 15/32" (11.9 mm) to accommodate various application requirements.

Constructed with a titanium coating to extend tool life, this step drill bit produces cylindrical holes in 13 different sizes ranging from 1/8" (3.2 mm) to ½" (12.7 mm) The bit includes increments of 5/32" (4 mm), 3/16" (4.8 mm), 7/32" (5.6 mm), ¼" (6.4 mm), 9/32" (7.1 mm), 5/16" (7.9 mm), 11/32" (8.7 mm), 3/8" (9.5 mm), 13/32" (10.3 mm), 7/16" (11.1 mm), and 15/32" (11.9 mm) to accommodate various application requirements.