Can anyone direct me to the best source for the turned metal sleeves into which are pressed metalastic bushes. Metalastic Bush is 22mm OD 10mm ID and 30mm length. Need the tube sleeve/collar for a welding job for engine mounts.

eBay seamless tube, 28 mm O.D., 22 mm I.D.,

I have used this eBay supplier of CDS

CDS tubing on eBay

the supplier name makes them look dodgy but I have ordered quite a few lengths from them.