SEM 3" 36 Grit Quicklock Grinding Disc - Box of 25 [SA35036]3" 36 Grit Quicklock Grinding Disc Box of 25 SEM Performance Abrasives are specifically designed for todays complex automotive repairs. The abrasive products incorporate precision grain technology, which provides fast cutting, long life, and a consistent finish on all substrates. Features: Full ceramic grain Reinforced backing 3" Quicklock Grinding Disc 25 per box Quick Guide (pdf) Brochure (pdf)