Specification: 1.ST0705-B 3",3.5",4" Air Wet Sander/Polisher 2.4500rpm ... tools and industrial tools, like dies, taps, hss or carbide end mills, counter sinks, step drills, cobalt drills, hobs, reamers, etc ... DIY tools to Japan, Germany, the USA and Australia ST0705-B 3",3.5",4" Air Wet Sander/Polisher