... minimum material deformation 4 long life Diamond glass core drill bits are used to drill glass,ceramics, porcelain, ceramic, porcelain tile, limestone, slate ... : 10mmWall Thickness: 0.8mm-1mmAll these drill bits can be customized.This is the diamond drill bit we are producing: Other abrasive ... points All products above can be customized. thin wall diamond core drill bit with threaded shankfor glass