Application: Refer to parts book, 10050 (Mechanical Shuttle), 10050 Power plus, 10741, 11050 (Mechanical Shuttle), 11050 Power Plus, 3321, 3341, 4321, 4341, 6321, 6341, 6421, 6441, 7020, 7040, 7321, 7341, 8020, 8040, 8421, 8441, 8641, 9020, 9040, 9050 (Mechanical Shuttle), 9050 Power Plus