Handan Kaishan Drilling Tools Co., Ltd. Main product: drill bit series, drill rod series, cutter pick series and other coal mine machinery accessories. Our company was established in 2011, located in Industry and Trade Zone, Linzhang, Handan, Hebei, China. Main product: PDC 3, 4, 5 wings steel body concave face non coring drii bit ( 75mm~460mm ) PDC anchor drill bit ( 28~42mm )PDC core drill bit Spiral drill bit/ geological drill bit/ triangle drill bitCutter pick