The DiamondShine concrete floor polishing machine is designed for high-speed honing and polishing of concrete floors. The 17-hp Kawasaki propane engine drives three diamond heads at 1100 rpm. This, combined with 400 lbs. of head pressure, makes the DiamondShine ideal for honing, polishing, and grinding commercial and institutional concrete floors. Aztec Products. 800-331-1423.