Orangatang's Nipple Bushings for your longboard trucks are now available at last. They come in 3 colours with different duro's. They follow the same colour scheme as Orangatang wheels, orange is the softest coming in at 85a, purple is medium at 87a and yellow is hardest at 89a.
These bushings are matched barrel shapes and come with washers to suit, if you want to use them. They are going for $16.95 and for a set of 4 bushings (enough to do two trucks). Check them out below: