PROXXON Diamond Coated Cutting Disc for LHW & LHW/A Angle Grinder. This 50mm diameter disc has a diamond coated edge and a 10mm bore. It is designed for making fine cuts in hard materials such as glass, porcelain, ceramics and stone. The cooling holes help minimise heat build-up. It is suitable for the PROXXON long neck angle grinders LHW and LHW/A. Key Features: Diamond coated edge for cutting hard materials, Suitable for glass, porcelain, stone and ceramics, Cooling holes minimise heat build-up, Fits long neck angle grinders LHW and LHW/A, 50mm diameter with 10mm bore. For making very thin cuts in hard materials like glass, porcelain and tiles. Low heat development due to cooling bore. Proxxon 28558 diamond-coated cutting disc diameter 50 mm for LHW LWS 28547 29815 29817. Thanks to the cooling holes, the disc is less heated. The addition of coolant increases the service life of the cutting disc. Dimensions: disc: diameter 50 mm, thickness: 0.6 mm, bore: diameter 10 mm, max. Speed: 20,000 rpm.