Amtech 3 Piece High Speed Steel Step Drill Set (Large)

Zoro Tools

SMOOTH, CLEAN CUTS: This 3 piece large HSS drill set is made from drop forged, high speed steel with a titanium coating to provide faster, smoother and cleaner cuts. DURABLE: The bits are ideal for drilling through aluminium, brass, copper and mild steel to obtain the proper depth. HEX SHANK INCLUDED: The set includes a 6mm (1/4") quick change hex shank and 3 large drill bit sizes and is provided with a handy storage pouch.

Cazaar

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.