... intensity 2.longer lifetime 3.well 4.reliable connection 5.safety A, Shank Sheath is introduced,Product name specificationsModelButtons ... Type Bits60*24RLP8-10*13.5-18Serial number Product namespecificationsmodelCoupling Dimension note1High-efficiency drill bitsΦ44*F13mmDry standard-type13*13We ... and can beCoupling DimensionChanged to 16*16 18*6 M16 M14*1.5,etc B,Shank Sheath illustration, C,Shank ...