The 5:1 mainsheet system features 2148 and 2151 Carbo T2 blocks that hang from a Dyneema® strop attached to the boom. A 2621 57 mm Carbo fiddle rides on the traveler car. A 57 mm 2135 Carbo ratchet atop a 144 swivel base finishes the system. The switchable ratchet allows the skipper to turn the ratchet off in light air, or on when grip is needed.