Products Search by Part Number Products>Actuators>Linear Actuators>Tie Rod>MB-Z>MB, Accessory, Double Knuckle Joint MB, Accessory, Double Knuckle Joint The MB series add on double rod end knuckle joint. Double knuckle joint Applicable series: MB Applicable bore sizes (mm): 32, 40, 50, 63, 80, 100 Configuration Options Select Product Options Select values from the drop down lists or make appropriate selections to configure the part number. Applicable Bore Size -- Pick an Option -- 03M (32mm) 04M (40mm) 05M (50/63mm) 08M (80mm) 10M (100mm) Options in: Gray are not compatible with other selected option value. Red conflict with another selected option value. Amber are not recommended.