New models in Renold Gears' WM Series gearbox range are directly interchangeable with David Brown's metric Radicon units. WM mounting and shaft extension dimensions are now identical to those of the Radicon series, so any old Radicon box can be replaced with a new Renold WM 'drop-in'. The entire WM range is now available in nominal metric and traditional inch sizes, with new centre distances of 100, 125, 160 and 200mm. A variety of ratios is available, from 5:1 to 70:1.