I have a set of shimano bar end shifters I believe they are vintage. On the side of the shifter it says finger tip control I do not know how many speeds I can shift with these. I believe these are friction shifters. I think there is a 333 on top with shimano on it. I have a vintage suntour freewheel which I want to use. I also have a Regina 5 speed freewheel which is bigger in size than the suntour freewheel. Can anyone tell me about these shifters please I need to know so I can put the right freewheel on thanks all, Kevin