Diamond countersink are used to drill glass,ceramics, porcelain, ceramic,porcelain tile, limestone, slate, marble, granite, stone, and fiberglass, etc.
Head inner diameter:4mm-100mm Match with diamond drill bit. Customized size is available.
Taking high quality steel as matrix, being formed through intermediate frequency hot pressing sintering.
Working in cooling water, high precision, sharp grinding , low noise, no tremor, no broken edge, high wear-resistance，high efficiency, long service life.