1. ZC flap disc 2. Abrasive: KBLD zirconium 3. Size: 4" - 7" 4. Used for grinding and polishing steel 5. Grit:36#-600 ... technology. It has therefore a very high safety performance.4. Glass fiber cover,with high strength and toughness of the support, ... .ZA.CSynthetic ResinConvex/flatGlass Fiber/Plastic It used for Regular steel.Stainless steel,Cast iron,ordinary carbon steel.Alloy steel,Non ...