These lightweight, solid aluminum and compact captive ball (CB) travelers are built to handle very high loads. Captive ball bearings let you roll the cars on and off the track without using a ball loader. Additional features include stainless-steel wire guides for smooth transitioning and sculpted sides to reduce weight. Toggle cars have low pivot points (for efficient load transfer) and let you fasten mainsheet and control blocks directly to the block swivel post.Key Features: Application: Mainsheet systems, Genoa leads Boat Size: Dinghies, multihulls, to small offshore boats Material: One-piece solid aluminum Shackle: Pivoting toggle models—fasten control blocks directly to post without needing a shackle Sheave: Fixed sheave models—mainsheet loads 40 or less from vertical