Walter SST+ 9/64" x 6" Cobalt Extension Drill Bit

Reach Further with Walter SST+ Performance

Every welder knows the frustration of trying to drill a hole in a tight spot or through a thick section of box tubing only to find their standard bit is too short. The Walter 01F509 9/64" SST+ Extension Drill Bit solves this problem with a generous 6-inch length, giving you the reach you need to complete fabrication jobs without compromise. Designed specifically for the metalworking trade, this bit eats through stainless steel without burning up, thanks to its premium cobalt blend construction.

Standard drill bits often dull quickly when facing the work-hardening properties of stainless steel. Walter's SST+ technology combats this with a robust design that withstands high temperatures and aggressive feed rates. The bronze SST surface treatment helps shed heat and chips, keeping the bit cooler and cutting longer. This means fewer bit changes and less downtime in the shop.

Accuracy is critical in welding preparation, and this bit delivers. The quick-biting split point tip prevents the bit from skating across your workpiece, ensuring your holes are exactly where you marked them. Ideal for drilling rivet holes, pilot holes for tapping, or clearing out broken bolts in deep recesses, the Walter 9/64" Extension Bit is a toolbox essential for any serious fabricator working with mixed metals.