phone: - fax: 21 in. x 21 in. U.S. STONEWARE PEBBLE MILL - ALUMINA CYLINDER 1 - Used U.S. Stoneware Pebble Mill Alumina cylinder is approx. 21 in. dia. x 21 in. long 6 in. round steel door with urethane lining on contact areas Unit appears to be a standard U.S. Stoneware machine |