For the smaller size for boats up to 6 metres in length, these are the track size 25×4mm (length approx. 80cm), the gennaker tube (40mm diameter) has a tube length of approx. 80cm. The track system with the car and the guide eye should be screwed to the deck individually for each ship (a stable substructure may be necessary). The extendable gennaker tube is to be positioned extendably over the bow fitting. For this purpose, the locking on the car should be released and when the ideal position is reached in the extended state, it should be locked again in one of the rest holes. The scope of delivery does not include the fastening screws and, if necessary, sealing material, which must be selected individually for each ship. Furthermore, the set does not include the gennaker rope, which is fed through the tube.