Model Part Number Drill Bit Size Range Backhead Thread
MX4044 Hammer 3 1/2" Remet MX4044AA01 102mm - 114mm 4.0” - 4.5” 3 1/2" Remet
MX4550 Hammer 4" Remet MX4550AA01 114mm - 127mm 4.5” -5.0” 4" Remet
MX4550 Hammer 4" Metzke MX4550AA11 114mm - 127mm 4.5” -5.0” 4" Metzke
MX5053 Hammer 4" Remet MX5053AS01 127mm - 143mm 5” - 5.625” 4" Remet
MX5053 Hammer 4" Metzke MX5053AS02 127mm - 143mm 5” - 5.625” 4" Metzke
MX5053 Hammer 4 1/2" Remet MX5053AS03 127mm - 143mm 5” - 5.625” 4 1/2" Remet
MX5053 Hammer 4 1/2" Metzke MX5053AS04 127mm - 143mm 5” - 5.625” 4 1/2" Metzke
MX5456 Hammer 4 1/2" Remet MX5456AS01 137mm - 146mm 5.4” - 5.75” 4 1/2" Remet
MX5456 Hammer 4 1/2" Metzke MX5456AS02 137mm - 146mm 5.4” - 5.75” 4 1/2" Metzke