... 4.speed adjustable We have the following workshops: 1. Workshop 1: diamond electroplated products: diamond burrs, diamond files, diamond stone sharpeners, diamond ... and dry pads)rubber and plastic back-up pads,grinding stone, stone brushesstone cutting machines, pneumatic water sandersmetal suction cups, plastic ... tools to Japan, Germany, the USA and Australia Mini Speed Adjustable Grinder 110V/220V