Walter SST+ 1/4-Inch x 6-Inch Extension Drill Bit

Heavy-Duty Drilling for Hard-to-Reach Welds

Fabricators and welders know that the toughest holes to drill are often the ones hardest to reach. The Walter 01F516 1/4" SST+ Extension Drill Bit (6" Length) is the solution for those awkward, tight-access spots in your fabrication projects. When you are working on a chassis, a deep frame, or a complex pipe assembly, a standard length bit simply won't cut it. This 6-inch extension bit gives you the extra length needed to penetrate through multiple layers or reach behind obstructions, ensuring your fit-up and assembly work proceeds smoothly.

Walter Surface Technologies is renowned in the welding industry for producing tools that stand up to the rigors of metalworking, and the SST+ line is no exception. This bit is crafted with a robust HSS body and treated with a unique bronze SST+ coating. This coating acts as a heat shield and lubricant, allowing the bit to cut through work-hardening materials like stainless steel without burning up. For a welder, this means you can drill clean, burr-free holes for rivets, bolts, or plug welds without constantly sharpening or replacing your tooling.

Performance matters in the shop. The 135-degree split point on this bit bites into the metal instantly, allowing you to drill with one hand if necessary, without the bit skating across your workpiece. This is particularly useful when working out of position or on curved surfaces like pipe. The round shank fits securely into any standard 3/8" or 1/2" drill chuck, providing a non-slip grip for high-torque drilling. Don't let limited access slow down your production; equip your shop with the Walter 01F516 and handle deep drilling tasks with confidence and speed.