Walter A-21 Vitrified Mounted Point for Die Grinders

Get Into the Tight Spots with Confidence

Every welder and fabricator knows the frustration of finishing a job only to find a burr, a high spot, or a weld defect in a corner where a 4.5-inch angle grinder just won't fit. That is exactly where the Walter A-21 Mounted Point (SKU: 12D056) shines. Built for the real-world demands of the welding shop, this grinding stone is designed to be paired with your trusty die grinder to tackle the hard-to-reach areas on your metalwork. It isn't just another generic stone that disintegrates the moment it touches the metal; it is a professional-grade tool meant for serious stock removal on tough materials.

When you are working with tough steel, cast iron, or tool steel, you need an abrasive that bites. Soft stones wear out too fast, and overly hard stones just rub and generate heat without cutting. Walter has hit the sweet spot with this A-21 point. It features top-quality abrasive grains that dig into the metal, allowing you to enlarge holes, smooth out rough castings, or blend intricate welds with ease. The "Tough Steel" formulation means it stands up to the abuse of heavy fabrication work without crumbling, saving you trips to the tool crib to grab replacements constantly.

The biggest complaint with die grinder stones is usually the vibration. A wobbling stone makes your hands numb, ruins the finish with chatter marks, and can even destroy the collet on your grinder. Walter pays special attention to the balance of these points. When you spin this A-21 up to speed, you will notice it runs true and smooth. This stability gives you the control you need to do fine detail work without the tool jumping around. It allows for "flawless finishing work," as the manufacturer describes, meaning you spend less time fighting the tool and more time getting the part out the door.

This mounted point is an essential accessory for anyone doing fitting work, mold repair, or general metal fabrication. Whether you are cleaning up a flame-cut edge inside a pipe, prepping a bevel in a tight joint, or just knocking down sharp edges on a custom bracket, the A-21 shape provides the versatility you need. It is rugged, reliable, and built by a brand that understands what welders need. Add a few of these to your box, and you will be ready for those detailed finishing tasks that separate a rough job from a professional one.