... thus guaranteeing the good quality and longevity. Different face design, button shapes, flushing holes design and hole openers designs of DTH ... 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 ...