Carrier features: Enables the seat to be mounted on an existing rear rack, Easy mounting, Lockable, Integrated suspension for maximum passenger comfort, Suitable for e-bikes, Racks to confirm to ISO 11243, Racks should be approved to carry 25-30kg, Fits racks between 120-180mm wide with a tube diameter of 10-20mm This item is sold by SDJ Sports, a business located in the UK and import duty/gst may apply. Please check http://trade.me/whatsmyduty for more.