They are greasable, but they are not intended for continuous usage. These are for the hardcore guys that have to work on their rigs a lot. The guy Jesse originally made them for was hoping to get three runs out of them before he had to replaced the bushings. He broke stock Dana 44 joints every time he took his truck out. So if you break axle joints every time you wheel, then these will solve that problem, but if you don't, then just order the standard Spicer axle joints from Jesse.
Jeff427
<font color=red>Mud Dog Off Road Club</font color=red>
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