Irwin 316015 Cobalt Drill Bit Set 15-Piece 1/16 In to 3/8 In

Irwin cobalt HSS jobber drill bit at 3/16 inch. Cobalt construction extends bit life on stainless and hardened steel vs standard HSS. Used in mechanical assembly drilling work.

Irwin cobalt HSS jobber drill bit at 3/8 inch. Cobalt construction extends bit life on stainless and hardened steel vs standard HSS. Used in mechanical assembly drilling work.

Irwin 21-piece HSS drill bit set covering 1/16 inch through 3/8 inch in metal index case. Smaller piece count than 29-piece set fits compact service technician tool kits.

Irwin 18-piece black oxide drill bit set covering 1/16 inch through 1/2 inch. Black oxide coating extends bit life over uncoated HSS. Smaller piece count than 29-piece set fits compact service...

Irwin cobalt HSS jobber drill bit at 15/64 inch. Cobalt construction extends bit life on stainless and hardened steel vs standard HSS. Used in mechanical assembly drilling work.