Pads and Abrasives RSP27-K Round Hook and Loop Backing Pad (8-hole). 5-Inch round hook & loop backing pad is a replacement pad that fits many sanders. It features a foam body attached to a hard plastic backing plate. It also has a sturdy Hook & Loop style bottom for use with hook-and-loop sandpaper. This pad has eight vacuum holes and is 5-Inches in diameter. Specifications: Diameter: 5" Vacuum Holes: 8 Type: Hook & Loop This part is compatible with: : BO5021K Sander BO5010 Sander BO5021 Random Orbit Sander BO5020 Random Orbit Sander BO5011 Random Orbit Sander BO5012 5 inch Random Orbit Sander BO5030 5" Random Orbit Sander BO5031K Random Orbit Sander BO5041K Random Orbit Sander : SV13YA Sander SV13YB Sander has been a factory direct distributor of power tools, accessories, fittings and shop machinery since 1986.