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 wont 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.