4-1/2 Inch Zirconia Flap Disc - 40 Grit Type 29

Grind and Finish in One Step

Upgrade your angle grinder with the Forney 76306 4-1/2" Zirconia Flap Disc and experience the versatility of a tool that grinds like a wheel but finishes like a sander. Flap discs are a favorite among welders and fabricators because they allow you to remove heavy stock and blend surfaces simultaneously, saving you time on tool changes. This 40-grit disc is the workhorse of the lineup, designed to tackle the toughest jobs where speed and material removal are your top priorities. Whether you are smoothing out a fresh MIG weld, removing deep scratches, or beveling an edge for penetration, this disc bites into the metal and gets the job done fast.

The secret to its performance lies in the Zirconia Alumina grain. This blue abrasive material is tougher and harder than the brown aluminum oxide discs often found in hardware stores. It is built to withstand high temperatures and heavy pressure, meaning it won't glaze over or wear out prematurely when you are grinding on hard metals. The Type 29 angled shape is another key feature; it allows you to hold your grinder at a comfortable angle while maintaining maximum contact with the work surface. This gives you better control and leverage, helping you avoid gouging the metal while you work.

Compatible with almost any standard 4-1/2 inch angle grinder, this disc features a 7/8 inch unthreaded arbor hole. It is lightweight, cooler running than solid grinding wheels, and produces less vibration, which your hands will appreciate after a long day of fabrication. From automotive bodywork to farm equipment repair, the Forney 76306 is an essential consumable for any welder's toolbox, providing professional-grade results on steel, stainless, and other ferrous metals.