SST-1055-K GM Front Pump Remover and End Play Checking Tool The SST-1055 and SST-1068 together are used to measure output shaft end play without this adapter SST-1055 will not attach to the output shaft. Similar to T-1055 and T-1068 or Kent-Moore J-25022 and J-24773-A. SST-1055 is for use on these transmissions: 200, 200C, 200-R4, 250, 250C, 350, 350C, 375, 400, 3L80, 425, 3L80-HD, 700-R4, 4L60 & 4L60-E SST-1068 adapter is for use with these Transmissions: B, D, E/K, 200 4R, 4L60E .