This axle-less MTB front hub was made just for testing purposes, and for a bit of fun. The hub is equipped with two separate quick release skewers (with carbon fiber lever) for attaching to the fork. The weight without skewers is 100 g (3.53 oz). It really works...
Here is the hub installed on my bike (photo taken after the first test ride):
Using this hub you can take your pet fish or favourite duckie toy with you wherever you want to ride :-) (just photoshopped)