They should come complete (with both ends), but it is worth noting that not all anular axles are the same in regard to their flange. I had some from Rock Auto that I wore out and got a couple of genuine Mercedes axles in the junkyard but I still had to open the diff because the flanges weren’t compatible. I also found that with the anular ones, I had to break the joint to get them in. No big deal, just a few more bolts. Use loc-tite... I didn’t the first time... oops

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'83 300D turbo diesel (334k daily commuter)
SOLD '80 240D 4 speed manual, #2 piston pitted from crushing a 10mm nut. Running it 'till it burns through.
'78 F-150 300cid 4spd od (with my great unkle's original sales receipt)
SOLD '66 Ford P-350 delivery truck (almost driveable)
'49 Dodge B1D (1 ton Pilothouse era truck) not running but all there, candidate for om617 and 4x4 conversion when money permits.