This is a bare bones coarse adjuster kit for the c420. The system uses a Chinese Finger Trap Splice to maintain tension on the adjustment while still allowing easy adjustment on the water between or even during races. The system must normally be spliced directly onto your boat so we have rigged the least expensive part of the system (the hard anodized trapeze adjuster Clam Cleat) to the bottom of the line. A Brummel splice for easy installation finishes out the kit. Simply slide your own trapeze handle or puck onto the line and luggage tag the whole system onto your existing trapeze Wire. An excellent upgrade from the stock c420 system.