Plastic track end for Series 25 Jib Lead System. For small keelboats and sportboats, T-track jib leads blend performance and functionality in a simple, efficient package. Composite slide bodies with plunger stops allow quick and easy manual adjustment.Lightweight: Virtually all metal components replaced with high-tech polymers and fiber equivalents. Car design modelled and optimized using finite element analysis and rapid prototyping techniques to achieve maximum strength-to-weight. Orbit Block models use a Dyneema Link, ten times stronger and lighter than steel, to provide the articulated connection between block and car.Integrated Functionality: Two-piece composite car body delivers low friction on the alloy track without needing separate inserts, and provides strength without weight and corrosion drawbacks of metal parts. Integrated becket at forward end of the car enables 2:1 sheet systems. Removable threaded pin allows fitting of alternate blocks and accessories.Low Profile and Compact: Sleek styling and positioning of the attachment pin provide a low lead aft for the lead block. Dyneema Link allows full articulation. Plunger stop button has a flush finish and the contoured form of the car eliminates the chance of lines and sails becoming snagged.Precise Adjustment: Easy one-handed adjustment. The toggle is located at the rear of the car for easy access from the cockpit. Arrow located on the side indicates the position of the stop for repeatable settings. Racing Track has 25mm (63/64") stop hole spacing for even more precise control of the car position and sheeting angle.