Shank Mimimum Hole Size Number of Splines Mincon DTH Hammer(s)
DHD340A 105mm 4 1/8" 8 4HR
MD4 105mm 4 1/8" 10 4HDS
SD4 105mm 4 1/8" 8 4HRSD
TD40 110mm 4 3/8" 12 4HRTD, MQ40*
* TD40 bits for MQ hammers should be ordered as MQ40 bits to avoid having to remove the foot valve from the drill bit.