4 - 42mm Step Cone Drill 14 Steps Hole Cutter HSS 4341 Titanium Finish Reamer 4pk

A set of 4 step drills / stepped cone cutters. Cuts a perfectly round hole in sheet metal. Covers sizes; Small Drill; 4mm, 6mm, 8mm, 10mm and 12mm. Medium Drill; 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm and 20mm. Large Drill; 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm and 32mm. Extra Large Drill; 4mm, 6mm, 9mm, 12mm, 15mm, 18mm, 21mm, 24mm, 27mm, 30mm, 33mm, 36mm, 39mm, 42mm Double fluted design for speed and accuracy. Ideal for thin metals such as steel aluminium, copper, fibreglass and PVC etc...