The 2400 ASR Auto Double-Prep Strike Router machines strike jambs and ball catch head jambs on residential doors. It can prepare a double strike jamb every three to four minutes or a single strike jamb every four to five minutes. The strike plate can have full lip, no lip or a T-strike, and the machine can accommodate a strike plate from ½ to 8 inches. The system can hold a 70- to 96-inch jamb with a width of 2 ½ to 10 ½ inches and jamb thickness can be 3/8 to 1 ½ inches.