Mirka Abrasives Inc. 23-614-080 Bulldog Gold 80G 5" 5-Hole Grip Disc 50/Box - Premium paper for finishing as well as heavy stock removal - Durable aluminum oxide grain delivers a fast, exceptionally long lasting cut - High strength resin bonded system - C & D-weight backings are 50% stronger than other premium brands using A-weight backings - Made with an anti-load stearate to provide increased life.