Irwin 31520 Cobalt HSS Left Hand 135 Degree Screw Machine Drill Bit 5/16 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 left hand cobalt HSS drill bit at 1/4 inch with split point. Left hand rotation supports broken bolt removal where right hand rotation would tighten the broken fastener. Cobalt construction...

Left-hand cobalt drill bit set drills counter to thread direction and frequently backs out broken bolts and studs as it cuts. Five-piece assortment covers common extraction sizes. Cobalt construction...

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.

Irwin cobalt HSS jobber drill bit at 1/2 inch. Cobalt construction extends bit life on stainless and hardened steel vs standard HSS. Used in mechanical assembly drilling work.