Norton Dry Ice A975 NorGrip hook and loop discs with patented Norton SG ceramic grain are ideal for hard to sand and self healing clears Norton Multi Air Cyclonic discs provide maximum dust extraction Norton Dry Ice A975 also works well on composite material aluminum and other difficult to sand surfaces Features . Pack of 5. Dry Ice Norgrip Discs 1500GR. Hook and loop fastener. Multiple vacuum hole design increases dust and debris extraction. Light B weight backing is flexible and offer a more consistent finish than cloth or fiber. P graded ceramic aluminum oxide abrasive is a self sharpening grit that last longer than aluminum oxide. 1500 grit Specifications . Size 3 in . Weight 0 15 lbs