01K140 - Walter SST+ #40 Cobalt Double-Ended Stub Drill Bit

Tough Bits for Tough Jobs: Walter #40 SST Double-Ended Stub Drill

Stop snapping drill bits halfway through a job. The Walter 01K140 #40 SST Double-Ended Stub Drill is built for the welder and fabricator who needs a bit that can take a beating and keep on cutting. If you work with sheet metal, auto body panels, or thin-walled tubing, you know that standard length bits often flex and snap when you lean into them. This Walter stub drill solves that problem with a short, stout profile that stays rigid, giving you more control and significantly less breakage.

What makes this bit a true shop essential is its double-ended design. We all know the frustration of a bit going dull right when you need it most. With the Walter SST, you essentially get a backup bit built right in. Just flip it around in your drill chuck, and you have a brand-new cutting edge ready to go. It’s perfect for drilling out spot welds or installing rivets where you need to move fast and can't afford to stop and run to the tool crib.

The material itself is a high-performance cobalt blend, not cheap carbon steel. This means it cuts through stainless steel and hardened alloys without burning up. The 135-degree split point tip bites into the metal instantly—no skating, no sliding, and no need to hammer a center punch mark before you start. Whether you are in an automotive repair shop, an HVAC installation site, or a custom fab shop, these bits are designed to save you time and money. Get the hole drilled right the first time, every time.

Why Fabricators Choose Walter SST

• Built for Sheet Metal: The short length is perfect for drilling through panels without hitting components behind them.
• No Walking: The split point tip grabs the metal instantly for precise hole placement.
• Drill Stainless: Cobalt formula cuts through hard stainless steel that ruins lesser bits.
• Value: Get twice the drilling life from a single bit thanks to the double-ended design.