1. Size - 80mm x 80mm x 80mm / 3-1/8" x 3-1/8" x 3-1/8"; granularity: 100 grits; type of connection: hook & loop; color: red. 2. Material - Aluminum oxide is a durable and hard material that lasts longer than other types of sandpaper. It has good heat resistance and can withstand high temperatures without losing its abrasive properties. The sandpapers provide consistent, even sanding action for an even, smooth sanding finish. 3. Features - Hook & loop connection sanding pads can be quick and easy to install and remove, and provide a secure hold. Can easily change the pads just in seconds. Hook & loop pads offer convenience, reliability and efficiency. 4. Applications - Multitool sandpapers are suitable for wood, metal, plastics, and fiberglass. Great for general grinding, polishing and sanding in woodworking, auto repair, metalworking and general finishing surfaces. Triangular sandpapers provide better access to tight spaces and ensures efficient sanding of corners and edges.