• Flap disc bolts directly onto the grinder. no need for back-up pad. • Reinforced fibreglass back support. • Contamination free. • Multi-layer abrasive grinding flaps. • Flap disc can last 20 to 30 times longer than fibre discs. • Cool and soft cut with less loading. • Zirconium material and build quality allows for light to medium duty usage on all material applications, including stainless steel, mild steel, wood, plastics etc.