1)Backing :S-Polyester cloth
2)Abrasive:Zirconium aluminum oxide
3)Grit Range:P24-120
4)Max width: 550
4)Waterproofness: Good
Ultra-heavy polyester cloth backing  ,with high strength, good machinery property ,heat-resistance and anti-clogging .For heavy load polishing of titanium alloy ,stainless steel ,precision casting and exercise equipment