RNG Agdrive monroc, sonamia, tractor, axles, axle, pto, power take off shafts, Agricultural, wheels, tyres, Towing eyes, brake shoes, taper bearings, handbrakes, hydraulic cylinders, brake rams, spring sets RNG Agdrive Ltd is a family run company that was originally formed to supply machinery manufacturers with power take-off shafts. RNG Agdrive Ltd provides the high quality Weasler product range of power shafts. The company expanded in 1998 to become the sole UK agent for Sonamia of France. The product range has extended to include the high quality range of Monroc Axles and components.