Walter SM-42 Double Cut Tungsten Carbide Rotary File

The Heavy-Duty Burr for Serious Metalworking

When you are grinding out a weld or opening up a hole in a tight spot, you need a tool that bites into the metal without fighting you. The Walter 01V025 Carbide Burr SM-42 DC is built for welders and fabricators who demand reliability and speed. Made from premium tungsten carbide, this burr is tough enough to handle the hardest jobs in the shop, from grinding down stainless steel welds to shaping mild steel components. It’s designed to stay sharp longer, meaning you spend more time working and less time swapping out worn bits.

One of the biggest frustrations with cheap burrs is the "chatter"—that bouncing vibration that ruins your finish and numbs your hands. Walter has solved this with superior manufacturing that guarantees perfect balance and concentricity. Combined with the Double Cut (alternate diamond) pattern, this tool runs smooth and true. The double cut design creates smaller chips rather than long, dangerous slivers, which keeps your workspace cleaner and prevents the burr from pulling or "walking" across the workpiece. This gives you the control you need for detailed work or when you need to hog out material quickly.

The SM-42 cone shape is incredibly versatile, acting as a go-to problem solver in your toolbox. It is perfect for getting into corners, beveling edges, or reaming out misaligned holes. Whether you are doing prep work before laying a bead or cleaning up spatter and slag afterwards, this rotary file delivers a professional finish every time. Don't settle for tools that dull after a few passes; equip your die grinder with Walter carbide burrs and experience the difference that quality engineering makes in your daily fabrication tasks.