Benchmark Abrasives 4-1/2" x 7/8" T29 flap disc is ideal for sanding, grinding, deburring, finishing, etc. for cast Iron, steel, stainless steel, titanium, fiberglass, wood, and more..Zirconia high-density flap discs are manufactured using European zirconia cloth. The European material is superior due to its uniform particle size and premium blend of ingredients..Designed to meet industrial standards, our high-quality flap discs are recommended to be used with angle grinders sized 4-1/2" to 5“. These Type 29 flap discs are versatile products used for aggressive stock removal and surface blending..Efficient flap wheels are used in various industries like automotive, household, transportation, mining, shipbuilding, foundries, construction, fabrication, etc..All our abrasive products are made with quality materials and exceed ANSI and EU European Standards. We trust in delivering high-quality products to the end-user. Customer satisfaction is the lifeline of our brand.