Ronstan Series 25 T-Track - Composite Slide - 25mm (1") [RC72504]Series 25 T Track Composite Slide 102mm(4") For small keel boats and sportsboats T track jib leads are a great blend of performance and functionality in a simple, efficient package. Composite slide bodies with plunger stops run on anodised aluminium track, and allow quick and easy manual adjustment. Lightweight Composite jib lead cars continue the design philosophy of the award winning Ronstan BB and RT Orbit Blocks, with virtually all metal