20J3XB is a highly-flexible machine with a sub-spindle that comes standard with 6 OD tools, 4 static front/back drilling stations and 5 live cross drill/mill spindles for the main spindle. The sub-spindle has 3 static back drilling tools, 2 OD tools, 3 live cross drill/mill tools and 3 live off-center drill/mill tools. Both the main and back spindles come standard with a .001 degree C-Axis.