abrasive flap discs:
Material:Aluminum Oxide,Zirconium Oxide, Silicon Carbide, Ceramic
diameter:100mm,115mm,125mm,180mm
grit:40#,60#80#,120# etc.
Version:T27 Flat,T29 convex
Bonding:single or double flaps
backing:normally fiberglass backing/special backing are available.