Size: 75-170mm
Inner Hole: 16.2 / 22.3mm
Metal Rings: with 2 rings double side
Layers:6-13 layers
Top Layer: with paper/cloth
Two types of fiberglass backing pad T 27 andT 29.
Highly used for making flap discs, non-woven discs, wool felt polishing discs,
clean stripe discs, flexible flap disc etc....