Thanks for your reply but unfortunately none of the uk sleeve will fit, there is a discrepensy between imperial and metric and that is why. I would very much appreciate if your friend knows where I may be able to get them. 4.1/2" long in any diamiter would do. Many thanks once again, I am a new member and have just come accross the site, it is nice to have somewhere you can ask for help, I am a very keen woodworker