●Benchmark Abrasives 4.5" x 5/8"-11 T27 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 27 flap discs are versatile products that can be used from aggressive stock removal to surface blending. ●Efficient zirconia 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.