1. planetary counter rotation system for excellent grinding and polishing surfaces

2. completely  gear driven system without belts for longer lifetime and the heavy duty gear box is free of maintenance forever

3. Gears adopt low carbon alloy steel with osmotic hardening and precision machining with longer lifetime and lower noise

4. Double oil seales and specially proceed shafts greatly avoid the risk of oil leaking

5 adopt aluminum motor for better heat dissipation and strong power

6. wet and dry grinding and polishing for concrete, marble, granite and terrazzo

7. comfortable operation with 360 degrees adjustable handle

8. dust extraction skirt provides dust free operation when use with longopac dust extractor

9. innovative quick shift plate with manetics and velcro pad holder for metal and resin diamond tools