Need a tiny bit of work done on lathe

Would somebody be able to trim the outside diameter of a collet sleeve down from 6.35mm (1/2") to 6mm for me? I'd like to be able to use 3.17mm bits in my 6mm chuck. However I can only find reducer sleeves that go from 6.35mm to 3.17mm.

Please let me know how much you'd want for the work.

Alternatively if you know where I can buy such a collet sleeve please speak up!

Reduzierspannzange -CNC-Plus Germany

€12 plus tax and postage

OK ?

Read your PM's. G.

What machine are they for?

For my mill. Geoff said he has a reducer sleeve and a friend who could turn it down for me, so I'll wait and see if he will do it. Thanks!