hobby engine crane roller

this is a drop in roller for the hobby engine crane,part of the conversion to use bruder excavator tracks.
ill be uploading a front idler aswell.
it takes 1 1/2 bruder excavator tracks sets (3 tracks) for this crane
i printed in petg with support.

the crane,i got mine through amazon for $130 shipped.
https://www.sharperimage.com/si/view/product/RC+Professional+Replica+Crawler+Crane/206217?p=plist2470005&utm_source=Google&utm_medium=CPC&utm_campaign=Shopping+PLAs+-+Medium&Keyword=&device=c