1) Diameters: from 6mm to 20mm ?) Working length: 60mm ?) Segment height: 10mm4) Thread: G1/2", 5/8" - 11 ?) Other specifications are available ?) Small to large multi-purpose drill bits of varying hole diameters are used for ? countertops, tiles, ceramic, granite, marble and construction fixation ?) Used in industrial applications for machining of stone and construction ?) Many of cutting edge features and specifications are application-dependent,as the optimal feed rate and cutting speed ?) SANG wet drilling core bits combine precision engineering, high-tech ? manufacturing and top quality materials to ensure top performance in the wet drilling of cured concrete and asphalt ?0) We offer a full line of core bits dedicated to accuracy, expedient drillin speed and optimum footage ?1) Designed for fast, efficient cutting in a wide variety of concrete products ranging from poured, steel reinforced concrete to pre-stressed concrete and asphalt ?2) When being used, the crown of the bit is gradually worn away, continually exposing new diamonds for constant cutting speeds and long life ?3) Crown and segment dimensions plus low cost make this bit a good and general purpose bit ?4) Designed specifically for drilling smaller numbers of a specific size hole or where difficult drilling conditions may results in damage to more expensive longer life bits