When used with a 20mm block and a clew strap this makes a great outhaul system. The long lever makes opening and closing easy. This will hold the clew close to the boom with no chance of releasing until you want it to. Also perfect for the tack of the Jib on a 420! RF1032Price: $24.95Sale price: $21.21 Harken #224 Micro BlockThis little block is used for the "dingleberrys" (the 2 turning blocks on the mast for the outhaul) and can also be used at the clew of the sail either on a clew hook or a shackle. These are the same Harken blocks that come with the boat when new. These fit the Maffioli Swiftcord we have on our Line page. Sheave dia. (in) 7/8 Length (in) 1-1/2 Weight (oz) 1/2 Max. line dia. (in) 1/4 SWL (lb) 200 Breaking strength (lb) 1200 224Price: $15.55Sale price: $13.95 WE SHIP WORLDWIDE! We charge the actual cost of shipping. You may email us for a shipping cost estimate. Send us email intensitysails(at sign)gmail.com US$10 MINIMUM ORDER