Walter SST Cobalt Double-Ended Stub Drill Bit - Size F

The Ultimate Drill Bit for Fabricators and Welders

For welders and metal fabricators, a broken drill bit is more than just an annoyance—it's a work stoppage. The Walter 01K206 "F" SST Double-End Stub Drill is built to solve the most common frustrations encountered in the shop. Whether you are drilling out spot welds on an automotive restoration project or popping rivets on an aluminum assembly, this bit is designed to handle the abuse. The "stub" length is the secret weapon here; because the bit is shorter than a standard jobber drill, it is far less likely to snap when you apply pressure or if the drill twists in your hand. This rigidity gives you the confidence to lean into the cut.

What sets this bit apart is its premium cobalt blend material. Standard drill bits often burn up when they hit hard spots or stainless steel, but the Walter SST is formulated to resist high heat. This means it stays sharper for longer, cutting through stainless, mild steel, and aluminum with aggressive efficiency. For a welder, this translates to cleaner holes that are ready for plug welding or riveting without extensive deburring or cleanup.

Value is key in any shop, and the double-ended design of the 01K206 delivers exactly that. You are essentially buying two high-performance drill bits for the price of one. When the first tip finally begins to dull after extensive use, you don't have to stop work to sharpen it or hunt for a replacement—just flip it around in your drill chuck and keep going. This feature is a massive time-saver during field work or install jobs where carrying extra inventory isn't always feasible.

The Size F diameter (0.2570 inches) is a specific size often required for tapping or clearance holes for specific fasteners. With its self-centering split point, you can start drilling exactly where you marked, without the bit wandering across the metal surface. Upgrade your drilling arsenal with a tool that works as hard as you do.