Fits Atom models 301, 310, 410, 415, 420, 431, 435, 438, 440, 441, 450, 453, 454, 458, 480, 481, 550, 20301, 20310, 20410, 20415, 20420, 20431, 20435, 20438, 20440, 20441, 20450, 20453, 20454, 20458, 20480, 20481, 20550. c/w Bush