JET® Electric Trolley, Series: MT Series, 2 ton Load, Fits Beam Flange Width: 4 to 6 in, 66.9 in Minimum Radius Curve, 20 FPM Low/79 FPM High Speed, 1-1/4 in Wheel Tread dia, 0.12/0.49 hp Power, 230 V JET® 140187 MT Series Electric Trolley, 2 ton Load, 4 to 6 in, 0.12/0.49 hp Power Rating, 230 V