Mirka Bulldog Gold 5" Hook and Loop Sanding Disc, Pack of 50This durable sanding material is well suited for high speed sanding in a multitude of applications. Gold features semi-open and special stearate coatings designed to prevent clogging and pill forming which helps achieve an optimal sanding result. This makes Gold the TRUE standard.Features: 100 Grit: Mirka 23-612-1005" Diameter Hook and Loop DiscsPack of 50Aluminum oxideClosed coatResin over resin bond P80-P150 D-Weight latex paper; P180-P800 C-weight latex paper Designed for both finishing and heavy stock removal The Gold standard of abrasive paper. Used throughout the world. Mirka is a world-renowned manufacturer of abrasive products. They have a full product line suitable for the hobbyist to professional, and have pioneered many revolutionary, patented products. Some of their products lines are Abranet, Abralon, Mirlon and Bulldog Gold. Whether your application includes the woodworking, automotive, marine or metalworking industry, Mirka has products to suit your needs.