Dull drill bits stall your drill, walk across the work, and produce enough heat to work-harden the metal around the hole — especially in stainless or hard steel. You end up re-drilling or abandoning the hole entirely. This 13/64-inch jobber-length drill bit is sized for the 1/4-inch anchor and fixture hole range — the most common hole size in electrical, mechanical, and general construction work. The heavy-duty high-speed steel holds an edge through production drilling without constant replacement. Jobber length gives you more flutes for chip clearance and a longer straight section before the web thickens — cleaner holes, fewer stalls. The 13/64-inch size works with the full range of 1/4-inch anchors and lag screws. Standard on the drill bit inventory of maintenance crews and machinists ac Stocked at Crofton Lumber and Akron Lumber.