Welcome to Sinolite Tools Limited!
1)Product: 3pcs/set Step drill straight shank titanium nitride coated
sizes: 1/16"-1/2" 1/8"-1/2" 1/4"-3/4"
material: M2, M35
2)Picture of 3pcs/set HSS Step Drill sizes: 1/16"-1/2" 1/8"-1/2" 1/4"-3/4"