For machine sanding during all stages of the repair process. Open-coated aluminium oxide abrasives especially prepared for strength and durability. Hook & Loop, to be used with 150 mm pads._x000D_ _x000D_ Holes: 8 + 6 + 1_x000D_ Hook & Loop 150 mm _x000D_ _x000D_ P400. 100 discs per box.