Lortone Lapidary Arbor Works great! Rock and gemstone grinder / polisher rigged up with extra tubing and valves for water flow to each wheel. Comes mounted on plywood with well-running motor. Includes 2 lever lock drums and 4 rolls of sandpaper that get clamped into the drums(wheels). The clamping mechanism makes switching between grits much easier than trying to pull and push a tight belt off/onto a wheel. Plus you never have to worry about belt movement while you’re working - it’s clamped down. Also, sandpaper is pretty cheap to replace. These are great wheels for beginners or for those just getting started and not quite ready to fully invest into diamond wheels. Please message me with any questions.