All DTH bits are hot pressed and undergo a combination of heat treatments, thus guaranteeing the good quality and longevity.

All DTH bits (down the hole button bits) are hot pressed and undergo a combination of heat treatments, thus guaranteeing the good quality and longevity. Different face design, button shapes, flushing holes design and hole openers designs of DTH button bits are offered by bestlink to suit the specific application in water well drilling or tunneling. Besides, any design is available on customers' request, such as flat face, convex face, concave face, drop center face, spherical buttons, ballistic buttons, spike buttons, conical buttons. The diameters range from 60mm to 700mm. The shanks can be Cop series, like cop32, cop34, cop44, cop54, cop64, DHD series, like DHD3.5, DHD350, DHD340, DHD360, QL series, like QL40, QL60, SD series, SD4, SD5, SD6, SD8, and so on.