Fibreglass backing plates are made of fibreglass cloth which is specially woven and treated, ,it is widely used to be the base of coating tools such as flap discl, PVA abrasive disc etc.
Type 27, Type 29.
3.5", 4", 4.5", 5", 6". 7"
22.2mm, 16.2mm, 16mm, 15mm
black, red, yellow
Others sizes also can be available upon request.