Spare hamax fixing bracket ideal when using one childseat on two different bikes fits siesta smiley sleepy and kiss childseats this fititng provides maximum safety and will fit most bikes fits tubes with diameters of 28 mm 40mm with a quick release system which is easy to assembles means you can switch the seat between bikes with real ease the fixing is flexible to avoid conflict with the attachment point of the wire the two wire system also distributes the pressure evenly onto the t