We supply Step Drills(inch)
Size 3/16,1/4,5/16,3/8,7/16,1/2;
1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4;
1/4,3/8,1/2,5/8,3/4,7/8,1,1-1/4,1-3/8;
3/16,1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4,13/16,7/8;
1/8,5/32,3/16,7/32,1/4,9/32,5/16,11/32,3/8,13/32,7/16,15/32,1/2;
Step drills(metric)
4,6,8,10,12;
4,5,6,7,8,9,10,11,12;
4,5,6,7,8,9,10,11,12,14,16,18,20;
4,5,6,7,8,9,10,11,12,14,16,18,20,22;
6,8,10,12,14,16,18,20,22,24,26,28,30;
5,8,10,12,15,18,20,22,25,27,30,32,35.
Material:HSS and cobalt steel.

Kindly contact us if you have any questions.