The sanding pads are made from premium materials and have been designed to be dense yet flexible enough to allow to the contours of your work piece. The pad features a superior graded and loop material which has been designed for professional sanding applications. It has been designed to grip any type of and loop sanding sheets.This 125mm (5 inch) Round and Loop Backing Pad will fit the following , Erbauer, , , , Merterk, Holife, and other sanders which have a 4 hole mounting system. It features a high quality Polyurethane (PU) foam body which resists heat build-up and has 8 holes for efficient dust extraction. They are perfectly balanced and will give you professional results time.Type: Random Orbital Sander PadSize: 125mmHoles: 8Mounting Holes: 4 With: Any Sander With 4 Screw Holes And 30mm CentresDensity: Medium HardPart Number: N/AColour: black + blueMaterial: polyurethanePackage Contents:2 * Sander PadOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.