HO Scale Atlas GP38, GP40, RS1/2/3, C424/5, GP7, RSD4/5/12, C30-7, U23B, U33/36C Athearn "Genesis" series locomotives; F7, F3, SD70, SD75, SD80, etc Kato GP35, SD40, C44-9W Stewart AS16, F3A, F3B, F7A, F7B, F9A, F9B, U25B Dimensions: 2.850 x 0.65 x .125 inches - 72 x 17 x 3.2mm