Flap disc with reinforced flat nylon backing for heavy-duty applications. Bi-laminar execution with zirconium additive coolant. Guarantees cool, self-lubricating operation. Above-average overlapping flap widths offer an increased abrasive surface and longer disc life. Ideal on steels, high-alloy and stainless steels, but also suitable for cast iron, aluminium and light alloys. Recommended for use with grinders of suitable power.