Only fits a Trybike
This axle was in an envelope in the box along with the front axle. But where did I put it again? Order a new one here to convert your bike from three to two wheels.
See an instructional video on the conversion here:
https://youtu.be/Lu3bldgg7zY
www.kleine-flitzer.com fur Deutschland
www.hippychick.com for the UK
www.trybike.com.au for Australia and NZ