Unibit Step Drills

Unibit utilizes only the highest grade of high speed steel. Use in 3/8" power drills. Set contains 3 bits: #1 drills,13 sizes in 1/32" increments from 1/8 to 1/2" in 1/8" material, #2 drills 6 sizes in 1/16" increments from 3/16 to 1/2" in 3/8" material and #3 drills 9 sizes in 1/16" increments from 1/4 to 3/4" in 1/8" material.