Norton® BlueFire® 66623399141 R884P Center Mount Quick-Trim Standard Density Coated Abrasive Flap Disc, 4-1/2 in Dia, 7/8 in Center Hole, P40 Grit, Extra Coarse Grade, Zirconia Alumina Plus Abrasive, Type 27 Flat Disc

Flap discs are versatile grinding and finishing tools with three main components - backing plate, adhesive, and abrasive flaps. The flaps wear during use continually exposing new abrasive grain. The different variations of the components provide a variety of applications, ranging from heavy stock removal to blending to finishing. Flap discs are designed for portable grinder applications and can combine the 2-step stock removal and finishing operations of depressed center wheels and fiber discs into one operation.

• High performance zirconia alumina abrasive and semi-open coat deliver aggressive cut and long life providing up to 30% improved performance over competitive zirconia alumina products, ideal for mild carbon steel and welds
• Type 27 flat discs are designed to be used at a 0 to 15 deg angle on flat surfaces for blending and smooth finishing
• Flexible plastic backing plate adds conformability and is quickly, easily trimmable
• Polyester cotton backing combination for good cut rate and finishing