• Sealed, dust-proof grinding head with a new chain-driven planetary drive. • New stronger timing belt. • Upgraded shafts, seals and bearings. • New, lighter timing pulleys for better power transmission. • New 2-piece aluminum main belt housing with belt inspection cover for longer belt life and less maintenance. Grinding Pressure Working Width Tool Holder Diameter Heads Rotation Vacuum Hose Port Additional weights Water Tank Capacity New weights for faster position change. Redesigned frame allowing easier tool changes. New handle design with more positions. Adjustable LED lights with magne