60458 - PFERD POLIFAN PSF Z-EXTRA 4-1/2" x 7/8" Zirconia Flap Disc, 40 Grit, Type 27

Built to Last: The Heavy-Duty Flap Disc for Serious Fabrication

Every welder knows the frustration of a flap disc that gives up halfway through a job. The PFERD POLIFAN® PSF Z-EXTRA is built to solve exactly that problem. This isn't your average hardware store abrasive; it is a heavy-duty 4-1/2" disc packed with 40% more material than standard discs. That means you get a thicker, denser layer of flaps that keeps cutting long after other discs have worn down to the backing. For fabricators, this means fewer trips to the tool crib, fewer interruptions to swap out consumables, and more time spent actually making sparks. If you are grinding down heavy MIG welds or prepping thick plate, the 40 grit Zirconia grain bites hard and removes metal fast.

Versatility is key in a busy shop, and the PSF Z-EXTRA delivers. It is rated for both Steel and Stainless Steel (INOX), so you don't have to worry about cross-contamination or grabbing the wrong disc for the material. The Zirconia Alumina grain stays sharp and resists glazing, even when you are leaning into it. The Type 27 flat shape is perfect for blending surfaces and getting that smooth finish on flat runs. Plus, the fiberglass backing is tough—it won't smear or melt if you get it hot, ensuring your workpiece stays clean.

Whether you are running a high-amp industrial grinder or a smaller battery-powered unit, this disc performs. It is aggressive enough to hog out material but designed with a flap density that provides a smoother feel, reducing the vibration that leaves your hands numb at the end of the day. When you need a reliable workhorse that balances cost, life, and speed, the PFERD 60458 is the disc to keep in your box. It’s about getting the job done right and getting the most value out of every spark.