●Benchmark Abrasives 4.5" x 7/8" T27 flap disc is ideal for sanding, grinding, deburring, finishing, etc. for aluminum, copper, bronze, and other soft metals. ●Flap discs for aluminum with stearate coating 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 for aggressive stock removal to surface blending. ●Efficient aluminum 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.