Even tougher than high speed steel bits - last 30 times longer than standard drill bits!
Bores stainless, silicon-chrome, chrome-nickel - even armor and plate
Includes metal case; U.S.A.
Even tougher than high speed steel bits - last 30 times longer than standard drill bits!, Bores stainless, silicon-chrome, chrome-nickel - even armor and plate, Includes metal case; U.S.A. Pieces: 29, Sizes: 1/16in. to 1/2in. in 64ths
