Dinghy and catamaran mainsheet traveller and jib lead sheeting systems. Mainsheet systems on sportsboats and keel boats to 7m (23ft Low profile, lightweight alloy cars and end caps Twin rows of recirculating Torlon ball bearings provide smooth, low friction performance under load Loop and fork style fittings are easily added for becket and control line block attachment Compact sheave arrangements for neat, low profile control line purchase systems. Control sheaves are 1-3/16" diameter and suit up to 1/4" line Cleats, fairleads and cheek blocks can be mounted directly on deck or cockpit sides to complete the control line systems