MAX6080ZG Greenback™ Zirconia Maxidisc™ Trimmable Flap Disc (10 Pack)Greenback Maxidisc Pearl's Trimmable Flap Discs EASY TRIM BACKING SAVES TIME AND MONEY! Greenback's nylon Easy Trim backing allows you to shave off the green backing as the flaps wear down exposing more flap length. This translates into fewer wheel changes, saving you down time thus reducing your product usage and labor cost. Non warping nylon back Reinforced with fiberglass, gives the Greenback flap disc more strength and durability than the