Wall Grinding And Polishing Machine Grinding Machine cement Mortar Wall Polishing Machine-free shipping1) Model A: 4000 W Model B: 3800 W Model C: 4880 W, with LED light 2) Adjustable speed: 1 6 speed level 3) Diameter 37. 5cm 4)Advantage: Low operating noise, Smoothing effect is good, Strong power 5) Two handle design, the sub handle can be adjusted by 90deg, High quality power cord for high load work