The Century Drill and Tool 1/4 in. x 3-5/16 in. Cobalt Steel Stubby Drill Bit is engineered for heavy-duty drilling in tough metals and other hard materials. Its stubby length allows access in confined spaces where standard bits won’t reach, while the cobalt-alloy construction provides exceptional heat resistance and long cutting life. The straight shank fits most standard drill chucks for versatile use in workshops, job sites, or DIY projects. Left hand stub drill bit for removal of right hand threaded broken bolts or studs without tightening Use with screw extractors for those hard to remove bolts or studs Industrial polished finished with 135-deg. split point Made from premium cobalt steel