m48 3mm spacer

[Crushellon]

Hi,

I need an m48 x 3mm spacer for get my new baader mpcc III working. It's advertised as being for an m48 thread but needs to be spaced out 3mm and the only spacers I can really find are m42...

[Crushellon]

Like this, but without the ~$100 pricetag.

http://www.teleskop-express.de/shop/product_info.php/info/p6435_TS-3mm-Extension-Ring---2--Filter-thread-M48x0-75mm---male---female.html