http://www.amazon.com/shops/earthwide There is a new arrival at Amazon in the form of a Step Drill that minimizes the need to carry around numerous step drill bits. Step drill bits for metal are particularly searched for and this one actually does have most holes covered! With a variety from 4mm right through to 32mm you have a versatile step drill that is great for cutting holes in steel, stainless steel, perspex, fiberglass, copper, brass, laminates in addition to hard and soft wood.
It is a titanium coated step drill for longer life and has double flutes for smoother even cutting. The laser etched digits reveal quickly exactly what size hole you are drilling-these go up in 2mm increments.
This High Speed Steel step drill will be a convenient addition to any tool kit.