1.5 inch back holders are designed to fit diamond polishing pads, Max RPM 12000.2.Sanding Pads could be attached to any polishing pads easily and allows for a fast switching between different grit size.3.Connect a back holder to the polisher, and attach a polishing pad to the back holder.4.Using a thicker J-Hook design made from a more heat resistant material, and implementing a stronger adhesive.5.Please use with power tools with 5/16 inch * 24 thread spindle. (thread spindle is not included here) Specifications:Product Name: Sanding PadMaterial: Plastic, SpongeDiameter: 125mm / 5-inchThread Size: 5/16-inch * 24 threads ; Max RPM: 12000Package Content: 1 x Sanding PadsWeight: 104g;Color: Black, Yellow.
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