Faithfull hss step drill 4 to 12mm x 1.0mmStep drills, the easy way to cut the hole size you requires 4 to 12mm. Increments of 1.0mm thickness 4mm from HSS ( High Speed Steel )k: 6mm diameter.
Faithfull hss step drill 4 to 12mm x 1.0mmStep drills, the easy way to cut the hole size you requires 4 to 12mm. Increments of 1.0mm thickness 4mm from HSS ( High Speed Steel )k: 6mm diameter.