The Vertical Adjustment Kit allows the user to set the height of the Toe Pilot Foot Control during installation for optimal control. The Kit also aids in installation of the Foot Control or Foot Brace in kayaks with pre-existing mounting holes that do not match standard configurations. When using the CLC Footbrace Mounting stud kit, this is required for the Smart Track and Feathercraft Rudder systems. This kit is required if you want to install a Smart Track Toe-Pilots/Rudder System to a Mill Creek 16.5.