Amtech F0785 3 Piece high Speed Steel Step Drill Set

Amazon

SMOOTH, CLEAN CUTS: This 3 piece 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 useful drill bit sizes and is provided with a handy storage pouch, Manufacturer: DK Tools

Zoro Tools

SMOOTH, CLEAN CUTS: This 3 piece 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 useful drill bit sizes and is provided with a handy storage pouch.

Cazaar

The Amtech 3 piece high-speed steel step drill bit set includes 1 x 13 step bit (1/8"-1/2"), 1 x 9 step bit (1/4"-3/4"), 1 x 6 step bit (3/16"-1/2") and a 1/4" quick-change hex shank which can be used in any drill or drill press. Drop forged, high speed steel with titanium coating provides faster, smoother and cleaner cuts. Ideal for aluminium, brass, copper and mild and steel and also comes with a storage pouch.