The Flexipad Medium Density Pads are suitable for polishing and grinding. The backplate is made from impact resistant synthetic nylon which is bonded to microcellular polyurethane. Excellent resistance to initial and continuing tearing, oil and ageing. Made in Great BritainExtremely durable yet flexible backing pad for use with sander polishers. Thread: M14 x 2 internal.Type: Self Stick.Size: 150mm.