Specification The diameters of the flap wheel are from 10cm to 100cm(4" to 40"), their thickness is from 1cm to 25cm(0.4" to 60"); The core can be different materials(like plastic tube, aluminium tube, phenolphthalein tube etc.), can also be different diamenter and shape; The hardness can be different by change the pieces of hand pads in each flap wheel; The color can also be different, like Gray, Red, White, Green, Brown etc.; The grid size is from 46# to 3000#. We can also put sand abrasive paper/cloth at regular intervals, we can also meet client’s special requirements.