The kit includes: - the push rod - the adjustment rail to be mounted on the bridge - the trolley with pulley - the mast attachment HORIZONTAL MAST RAM KIT A3211 - - Adjustable mast chock kit for dinghies. Often used in the FIREBALL series.This ingenious system allows you to adjust your mast wedge with precision.Kit includes: - push rod - deck - mounted adjustment rail - trolley with pulley - mast attachmentDynamic Rig AdjustmentHorizontal Mast RamThese new systems have been developed using Allen Brothers wealth of experience with a number of craft in mind and can be customised to each boat with great ease. Examples of applications include the 505 horizontal mast strut (other kit = A3210), Fireball vertical mast strut (kit for sale here) and Graduate GNAV system (other kit = A3212). In all cases we provide a complete kit. Technical documents can be downloaded here