These Rhynogrip Film Line Discs are the perfect discs for finishing and polishing work. Because of the film backing they are crease and tear resistant as well as waterproof. The discs are made with a micro-finishing mineral grain that will reduce scratches and also has a lubricant coating that will prevent clogging. These discs were designed for extended work life. All grits come in a box of 50 discs. This is a special order item, may take 1 to 2 weeks to receive item.