Walter Coolcut 4.5-Inch Resin Fibre Disc 50 Grit

Keep Your Grinding Cool and Fast

When you are in the middle of a fabrication job, the last thing you want is an abrasive disc that glazes over, heats up your metal, or wears out after just a few minutes of grinding. The Walter Coolcut™ 4-1/2" Sanding Disc (SKU: 15C455) is built for welders who need to get the job done right the first time. With a 50 Grit rating, this disc is your go-to workhorse for everything from knocking down light welds to cleaning up steel surfaces before painting or priming. It strikes the perfect balance—aggressive enough to chew through rust and scale, but smooth enough to leave a professional finish.

What sets the Coolcut apart is right in the name: it cuts cool. Walter has engineered these discs with special additives that reduce friction and heat buildup. Why does that matter? Because excess heat turns your metal blue and can even warp thin sheets, leading to rework and wasted material. With Coolcut, you can grind longer and harder without overheating the workpiece. The premium aluminum oxide grains are applied using a high-tech electrostatic process that stands them up straight on the disc. This means you get more sharp cutting edges hitting the metal, rather than flat sides rubbing against it, giving you a faster cut with less pressure required from your arms.

Durability is key in any shop, and these discs feature a tough fibre backing that holds up under the stress of daily use. Whether you are prepping a joint for a weld, cleaning up spatter, or just smoothing out rough edges, the 15C455 delivers consistent performance from the first spin to the last. Pair this with a standard backing pad on your 4-1/2" angle grinder, and you have a reliable tool that helps you stay productive and keeps your consumable costs in check. Don't settle for generic discs that burn out; upgrade to Walter Coolcut and feel the difference.