Shank Mimimum Hole Size Number of Splines Mincon DTH Hammer(s)
QL60 149mm 5 7/8" 12 6DH, 6DH-LV, 6BH, MQ60*, MQ65*, MQ68*
DHD360 149mm 5 7/8" 8 6DH360
SD6 149mm 5 7/8" 8 MP55SD
* QL bits for MQ hammers should be ordered as MQ bits to avoid having to remove the foot valve from the drill bit.