Powerful 6-Speed Control Adjust from 1000 to 2000 RPM with the 6-gear dial to handle delicate polishing or aggressive grinding. Match speed to material hardness (concrete, metal, epoxy) for optimal results. Multi-Surface Versatility Switch between the 180mm diamond grinding disc (for stone/marble/brick) and 200mm steel wire brush (for rust/paint removal). 22mm universal bore fits most standard accessories. Ergonomic Extended Reach The 59-inch Machine length allows standing operation for ceilings (no ladder!) and low-position grinding (avoid bending). Lockable joints ensure stability during heavy-duty tasks.