what you will find is that the Grubee s

35mm X 1 is for all intents and purposes is the same as American 1.375 X 24 (1.375 times 25.4 = 34.925mm) The first time you install the freewheel there will be some tightness/resistance but continue threading the freewheel on and all will be fine. Be sure to grease the threads before installation.
ocscully