What Size to Buy?
Does anyone know how I can tell if I need a 10mm or 3/8 inch pair of these nuts.
They are to be used on a 1980's Dawes Lightning.
Thanks megamiles for the answer. I bought a pair of cheap 10mm nuts from a local shop - they went on but felt a little loose. So I ordered online the slightly smaller 3/8 Tacx nuts which fit perfectly.