Festool 484172 RAS 115 Stickfix Sanding Pad, Hard, 90mm (4 1/2 in) Hard pad delivers high edge strength for best results on flat surfaces and narrow edges StickFix hook and loop design for quick and efficient abrasive changes; enables re-use of partially used abrasives Solid sheet abrasive (no holes) enables maximum abrasion on the toughest surfaces, while a tool-integrated dust shroud maximizes dust extraction Mechanical, threaded fastening secures the pad for aggressive sanding applications. Festool pads utilize a highly-resilient, heat-resistant MPE foam for consistent finishing results, uniform wearing, and extended pad life.