The 16" 6 Stud Conversion is an option available on the zinc painted range of trailers and uni trailers. The 16" 6 stud conversion is often selected on off-road trailers, camping trailers and trailers designed to do heavy work such as larger machinery trailers. The 16" 6 stud conversion includes the fitting of a 45mm square axle, 6 stud hubs, slim-line bearings, 16"/205 second hand wheels and tyres and 16" 230mm wide mudguards.