Drill bit for drilling holes in bars?

[B_Turner]

Thanks for that heads up on them bits, I was entertaining the idea of getting some of them but now don`t think I will bother. I always have used colbalt bits in leaf spring and chainsaw bars plus any other hardened steel I have to drill and had good results. Anyone use Whitworth or Butterfield bits?
Pioneerguy600

Some folks really like them, but I'd recommend trying one first before you bought a bunch.

I ended up enjoying the slow twist bits and how they pulled up the two long shavings. Cut pretty fast and left a perfect hole.

 

[rxe]

These

http://www.drill-service.co.uk/Product.asp?Parent=020220080000&Tool=478

Will take out a busted stud extractor when used in a drill press, used nice and slow with coolant, they'd easily knock holes in a bar.