•4.5" x 5/8-11 black bolt on firm low profile ribbed face backup pad.
•Air cooled resin fiber disc pad.
•Great for the majority of aggressive grinding applications, especially for coarse grit sanding and grinding.
•Made with firm thermo-plastic compound and are rigid making them perfect for stock removal.
•Features airflow holes that are part of a revised and improved design to promote more flow underneath the abrasive disc in use.
•Cooling action extends the life of the disc and the backing pad itself.
(California Prop 65)