OO gauge, 1/8th plain axle.

OO gauge axle of 1/8th inch diameter for use with Markits/Romford driving wheels. It is made from stainless steel and fitted with screw fixings on the ends to secure the wheel. They are self-quartering thanks to the squared end which fits Markits/Romford driving wheels perfectly. Use the special screwdriver to tighten the screws which are also referred to as axle nuts.