Today i thought id save some money and grease the chassis myself. Although i had practice at work lubricating some of the heavy machinery, this is the first time i've lubed my jeep. All of the zerk fittings went smooth, but then i came to both my front and rear drive shafts (u-joints) near the t-case and found these ...





...are these another type of fitting? do i need to insert a new zerk fitting? I'm just not really sure what to do...

Any help would be appreciated!

 

And don't forget the needle zerk in the ball inside that double cardan

 

Awsome - thanks for the speedy help