This 100 mm diamond disc uses vacuum brazing to expose a dense layer of diamond particles for aggressive, efficient grinding. It is designed for heavy-duty surface preparation, smoothing, and shaping of hard materials such as wear-resistant ceramics, granite, and concrete. The disc provides a smooth feel with less vibration than standard cup wheels and offers an extended tool life. It is compatible with 100 mm (4 inch) angle grinders for both wet and dry applications.