SIA blue line zirconium flap discs for the sanding of steel, stainless steel and aluminium, available in 115, 125 & 180 mm diameters and a variety of grits. Flap discs are essentially rectangular flaps of abrasive material glued to a fibreglass backing plate. They boast a number of advantages over a conventional sanding disc:
-Last up to 20 times longer, reducing your downtime and unit cost.
-No backing pad is required.
-Very fast & aggressive stock removal
-Less vibration & noise.
-Their conical design makes them great for edging & contour work.