Originally Posted by bairdco
if you need ends with a set screw for the clutch cable and drum brakes (not the barrel end in the lever, the lock down end on the other side) pep boys has brass ones in multiple sizes for a few bucks for a 5 pack.
Hobby shops have them too. Look in the model airplane accessories for 'wheel collars'. For cables you'll want one with a 1/16" hole.
They will be either brass or steel, some are even chrome plated. They're used to hold the wheels on the axles of model airplanes.