Check the listing for details. 3M 20331 Sander 6.88 Inch Width X 9.63 Inch Length Single. Color: Red, Condition: New. Listed at 310.05 USD. 3M ™ Orbital Sanders - Original Series are designed to maximize finishing performance on flat surfaces. Its 3 x 4 Inch work face easily gets into corners and angles to deliver an exceptionally smooth, flat, professional surface on metal, wood, composites and advanced materials. Air-powered 3M ™ Orbital Sanders - Original Series are available in three vacuum styles, with accessories. 3M ™ Hookit ™ back-up pads are perfectly mated for use with hook-and-loop style3M ™ Hookit ™ sheets. They're ideal for work spaces where adhesive backed discs may become contaminated by dust, dirt or flying debris. The 3M ™ Hookit ™ attachment system allows you to easily attach, detach and reattach the abrasive, thus utilizing the entire life of the sheet, resulting in less shop waste. .