Blue Star Diamond - Easy Edge Edge Ceramic Cup Wheel 5" - 400 Grit

- A 5-inch 400 grit ceramic cup wheel built for edge work on concrete polishing projects, delivering an enhanced matte finish at the edges that blends cleanly with the main floor surface — effectively replacing metal bond cup wheels on most concrete polishing jobs and eliminating the deep scratches and gouging they typically leave behind.

- Made with Boride's Blue Star Diamond Technology, a ceramic bond matrix that holds diamond particles in place longer than resin alternatives — giving the wheel cutting characteristics that fall between a metal bond and a resin pad, allowing it to remove material faster while still producing a refined, consistent finish.

- Compatible with most hand grinders and walk-behind edge machines equipped with a 5/8"-11 threaded connection, and works equally well on hard, medium, and soft concrete in both wet and dry conditions — offering broad versatility across the full range of edge work encountered on commercial and residential polishing projects.

- At 400 grit, this wheel sits at the fine end of the Easy Edge lineup — following the 270 grit honing pass — and is suited for operators looking to bring edges to a polished, refined finish that matches the aesthetic of the main floor without additional resin polishing steps at the perimeter.

- Lightweight and easy to handle compared to heavier metal cup wheels, with no need for variable speed control during operation — making it accessible for both newer operators learning edge work and experienced polishers looking to save time and reduce labor on the edges of large commercial floors.