Buy Indasa Rhynogrip RedLine 6" 9-Hole Vacuum Sanding Discs (690 Series) are perfect for various applications, including heavy sanding, prep sanding, fine sanding, blending, rectifying, and micro-finishing before polishing. These discs, designed with a velour grip backing and a 9-hole (8+1 center hole) configuration, are compatible with 6" Festool ETS and Rotex sanding machines. The hook and loop style backing ensures excellent dust extraction when used with a vacuum system. The RedLine series, Indasa's premium abrasive line, utilizes top-quality aluminum oxide mineral grains and a special lubricant coating to resist clogging. Available in a comprehensive range of grits, this abrasive system delivers exceptional cutting power, high stock removal, flexibility, consistent finishes, and an extended working life. Indasa 690 Series sanding discs are available in grits ranging from 36 to 1,500 and are sold in boxes of 50 discs.