Mercer Abrasives High Density T27 Zirconia Flap Discs feature high quality zirconia grains that require flat grinding surfaces. High density flap discs provide 40% more cloth than standard general purpose flap discs. These premium zirconia flap discs are proficient for grinding and blending tougher materials such as cast iron and stainless steel. High density T27 zirconia flap discs are ideal for many applications such as grinding, blending, finishing, deburring, deflashing, edge chamfering, and stock removal on all ferrous and non-ferrous metals. Try these type 27 premium zirconia flap discs today for a smooth finishing result.