Diablo, 50 Pack, 5 In. 320 Grit (Ultra Fine) Sandnet Discs With Connection Pad. Diablo's Sandnet Discs With Reusable Sanding Technology Are The Most Advanced Sanding Discs On The Market With Up To 10x Longer Life Versus Standard Sanding Discs. The Universal Net Design Fits All 5 And 8-Hole Sanders. Each Sandnet Discs Features A Clog-Reducing Nylon Net Design Coated In A Premium Ceramic Blend Grit For Fast Material Removal While Reducing Material Build-Up. The Sandnet Design Is Easy To Clean And Reuse Multiple Times By Simply Shaking, Vacuuming, Or Rinsing The Disc To Remove Any Pitch Build-Up. Includes A Free Connection Pad (A $5 Value) For Easy Attachment To Sander.