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, High Performance, Series: R884P, 4-1/2 in Disc Dia, 5/8-11 Center Hole Thread Size, 80 Grit, Medium Grade, Zirconia Alumina Abrasive, Type 29 Conical Disc, Fiberglass Backing, 13300 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

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Norton_07660703213_Catalog.pdf https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Norton_07660703213_Catalog.pdf