Velcro discs & PSA Discs:
They are fixed on hard rubber plate of pneumatic or electric tools, used for polishing surfaces of wood, primer, metal or stone.
Size:
3”,
4” (100mm),
4.5” (115mm),
5” (125mm),
6” (150mm),
7” (177mm), etc.
Materials: Brown Fused Alumina, or Silicon Carbide;
Holes: no hole, 1 hole, 5 holes, 6 holes, 8 hole, 8+1 holes, etc.