This ideal Amtech 3 piece high-speed steel step drill bit set includes 1 x 15 step bit (4-32mm), 1 x 9 step bit (4-20mm), 1 x 5 step bit (4-12mm) and a 1/4" quick-change hex shank which can be used in any drill or drill press.
Titanium nitride coated high-speed steel provides faster, smoother and cleaner cuts. Ideal for aluminium, brass, copper and mild steel and also comes with a storage pouch.
