Optimist Parts

Low-friction Micro blocks are compact and lightweight. They are ideal for lightly loaded control lines on boats of all sizes. Zim Applications C420: vang cascade and 2:1 control, centerboard uphaul Club Opti: sprit halyard   Harken Part # 224A LP...

Stamped shackles are used on most Harken small boat blocks. Harken Part # 072.100U LP Part # 91205

Made of durable, flexible PVC, stand-up boots holdblocks up without snagging lines. Fits 40 mm and 57 mm blocks  Zim Applications Opti: mainsheet block Harken Part # 369

Spring to make the ratchet block stay standing up. Helps reduce mainsheet snags. Works on ILCA, SF, Optimist, 420, and many other small sailboats. 2" X 7/8"    Harken Part # 71.1 LP Part # 91217