Hi, I'm glad to be part of this forum. I have been an enthusiastic cyclist in the past and I have recently taken it up again after a long absence. I recently bought a used Trek L200 city bike with an 8 speed Shimano internal gear system. It's definitely not a quick bike but it is lovely to ride. I am about to have it powder coated in British Racing green! So, I stripped it down this evening and carefully put all the pieces away. However, one piece dropped out when I was taking the handlebar, brake levers and gear shift off. It's a teeny shiny chromed steel cylinder 21mm long and 4mm in diameter. It's really clean so I am guessing that it was shielded from the weather. I have attached images of it and would really appreciate any tips in identifying it
