01M619 - Walter SST+ 1-7/16" Cobalt Prentice Drill Bit with 1/2" Shank

Drill Bigger Holes Without Bigger Drills

Fabricators and welders often face the challenge of needing to drill a large hole—specifically 1-7/16 inches—without access to a massive radial arm drill or a magnetic drill press. The Walter 01M619 SST+ Prentice Drill is the perfect solution for the shop floor and field work. This bit is engineered with a reduced 1/2-inch shank, allowing you to chuck it up in your standard heavy-duty hand drill or drill press. It turns your portable tools into heavy-hitting hole makers, saving you the time and expense of setting up specialized machinery for just a few holes.

When working with hard metals like stainless steel or structural plate, standard drill bits often burn up or dull instantly. The Walter 01M619 is manufactured from a premium cobalt blend that thrives in high-heat situations. This means you can drill more holes per bit, reducing your cost per hole and minimizing downtime spent swapping out dull tools. The bit features a special bronze surface treatment that helps shed chips and reduces friction, keeping the cutting edge cooler for longer. It is built to withstand the rigors of daily fabrication work, from truck frame modification to custom equipment assembly.

Slippage is a major annoyance when drilling large diameter holes; the torque required can cause a round shank to spin inside the chuck, ruining the shank and damaging the chuck jaws. Walter solves this with a 3-flat shank design that locks securely into place, ensuring that every ounce of torque your drill produces goes into cutting metal. Additionally, the advanced split-point geometry allows you to start drilling exactly where you marked, without the bit wandering across the surface. You can skip the pilot hole and go straight to the final size, speeding up your workflow significantly.

Whether you are drilling mild steel, aluminum, or tough stainless alloys, the Walter 01M619 delivers clean, round holes with speed and precision. It is an indispensable problem-solver for welders who need reliable tooling that works as hard as they do. Upgrade your drilling capacity today with the proven performance of Walter SST+ technology.