Open mesh design reduces clogging for faster sanding and increased dust collection. Made with cloth rather than paper for longer life. Silicone carbide abrasive grain for longer life. Works with all Machine Brands regardless of suction holes making it easy to choose. Performs well on Key Materials: Wood, Painted Wood and Metal. Lasts upto 4 times longer than standard traditional sandpaper - Can be rinsed or tapped clean. Suitable for the following machines KA161 BEW230 KA2500K KC2000F KA260GT Stanley STA39122-XJ formally Black Decker X39122