Mercer Abrasives Standard T27 Zirconia Flap Discs feature high quality zirconia grains that require flat grinding surfaces. These standard zirconia flap discs are ideal for general purpose sanding and grinding that does not require extensive material removal. Standard T27 zirconia flap discs are ideal for many applications such as grinding, blending, finishing, light deburring, deflashing, edge chamfering and stock removal on all ferrous and non-ferrous metals. Try these type 27 standard zirconia flap discs today!