Eaton/Fuller RTO15710B, Transmission Assys, (GOOD USED & INTERNALLY INSPECTED) Eaton Fuller RTO15710B Transmission For Sale, 10 Speed w/ Overdrive, Roadranger Twin Countershaft w/ Overdrive, 1550 lbs-ft Nominal Torque Capacity, Helical Auxiliary Gearing & Multi-mesh Front Gearing, 10 Forward Speeds, B Gear Set Ratio = Direct Drive, RT015710B, Stock # 6217