QD or tapered bushings in Europe

[Wild Russian]

Hi,
can anyone of European forum members tell me where can I gather some 3/4 (19 mm) bushings here? They are unbelievable cheap by Grainger in US, but Grainger sells only in North America, I believe? It's a very good way for conversion of nylon 180-200 mm caster wheels to drive wheels...
Or may be there are companies with reasonable prices who ships to Europe?
Thanks in advance,
Max