You are ordering Part #10231
Need help call 716-688-4488 ext. 103 or 100 (9Am to 4PM est)

Single concave flute design creates perfectly round holes in thin materials including steel, brass, copper, and aluminum. Constructed of industrial grade, high speed molybdenum steel. Graduated in 1/32" increments to drill 13 hole sizes from 1/8" to 1/2". 1/4" shank.