... of origin:dongguan ,china(mainland)type:diamond hand pads brand name:KMJ usage:grinding ,polishing ,sandinggrit: ... 100mmSpecificationssuper hard diamond and cbn sanding products 1,for glass, stones,steel,etc 2,professional manufacturer ... sand paper products( abrasive belts, block, discs, pads, bands) are made with our new production technologue. ... best quality diamond and CBN hand pads with thick foam