SANDING DISC 6", 320 grit, Stick Back (PSA) Abrasive Sandpaper Link Roll, 100 ct 6 inch X No Hole PSA adhesive sticky back sanding disc roll Standard "C" weight paper discs made from aluminum oxide with a non-loading stearate PSA Adhesive Sticky backing for easy to use sanding projects Stick self adhesive sanding disc to appropriate back up pad attached to an orbital or DA disc sander Ideal for finish sanding on woods, paints, metal, plastic, cultured marble and solid surface