DESCRIPTION: Resistant, durable zirconium oxide grain which allows a 3x faster material removal than conventional resin-bonded fibre discs. Very robust and resistant, with a very high removal rate. Type 27 design allows for grinding angles of 0-15 degrees. Very robust and resistant flap disc made with durable zirconium oxide grain. 3X faster material removal vs. conventional resin-bonded fibre disc.