Stabilus Lift- O- Mat Gas Springs One Pair 1653EY 

New old stock Stabilus Lift-O-Mat Gas Springs One Pair 1653EY 0230N 

I believe these are for Bluebird / Wonderlodge vehicles as I acquired them with other RV items. Useful for many applications. See the pics for dimensions. magnusinc.com/1653ey.html for info. I have several of these. $15.00 a pair plus $9.00 shipping and handling.