Diablo, 10 Pack, 6”, 220 Grit, Sanding Disc, Hook Lock Backing Includes Break Through Innovations That Improve Performance, Extend Sanding Life Increase Productivity, Designed For Use In Orbital Are Ideal For All Types Of Wood, Metal Plastics, Premium Ceramic Blend, Superior Quality Formulation Designed For Fast Material Removal Long Sanding Life, 6 Hole Design Pattern For Fast Precise Alignment On 6 Hole Sanders