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.

Norton® BlueFire® 20X™ Coated Abrasive Flap Disc, Arbor Thread High Performance Standard Density, Series: R884P, 4 in Disc Dia, M10 Center Hole Thread Size, P60 Grit, Coarse Grade, Zirconia Alumina Plus Abrasive, Type 29 Disc, Fiberglass Backing, 15300 rpm Maximum, Blue

• 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 29 have an angled face providing greater surface contact and are the best choice fast stock removal
• Fiberglass resin backing plates are the most popular due to high strength, lightweight and ability to absorb vibration
• Polyester cotton backing combination for good cut rate and finishing

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