Revo 1/8 hybrid aluminum rc monster diffs
 

not sure what version but they are tough as nails. Held up to 6s lipos easily (though the bearings broke - easy $3 fix)

E-Revo 1/8th Aluminum Diffs -
I believe they were manufactured by RC Monster
All aluminum caseing
1/8 size differential
there are two, both will need a new pinion gear and bearing
along with a good cleaning and re-oil

http://i857.photobucket.com/albums/a...e/P1040482.jpg

http://i857.photobucket.com/albums/a...e/P1040481.jpg

I believe these items are no longer manufactured, and are getting hard to come by. Pm me and we will discuss prices