b'Harken Vang-MasterHarken is now collaborating with Marine Products Engineering to offer Vang-Master rigid pneumatic boom vangs. Vang-Master boom vangs use air pressure to provide extension force to hold the boom up, without the need for metal springs. This reduces parts and weight while keeping operation squeak free, providing an infinitely adjustable, turnkey solution for maintaining optimal mainsail shape. Construction is hardcoat-anodized 6061-T6 aluminum, making them light and strong. Tubing and end fittings are threaded together eliminating fasteners and dissimilar metals to reduce corrosion.Harken Vang-Masters are designed to be easy to install. Options available are external purchase systems which feature Harken hardware exclusively. They come pre-measured, spliced andPurchase systems are available for finished with line specifically-selected for the application. each Vang-Master size with 4:1 or Harken distribution makes the vangs easy to obtain, while offering6:1 mechanical advantage in single- fast turnaround on spare parts and technical service. or double-ended configurations.Vang-Masters are available in eight standard sizes for boats 5-17 m (18-56 ft). Stainless steel mast and boom fitting and custom lengths are also available. Contact Harken for a price and lead time. Steve JostPin centerPin centerPin MaximumPart length (closed) length (open) Stroke WeightJaw width return forceNo. Description in mm in mm in mm lb kg in mm in mm lb kgVM13240Vang-Master 13281340101682032.751.253/8101/46350159VM24353Vang-Master 2431092531346102543.41.543/8101/46350159VM33444Vang-Master 334864441118102544.351.971/212.71/46500227 VM44656Vang-Master 4461168561422102545.52.491/212.71/212500227 VM54860Vang-Master 5481219601524123058.33.761/212.71/212800363VM66274Vang-Master 662157574188012305104.545/815.95/816800363VM76274Vang-Master 76215757418801230512.95.855/815.95/8161500680VM87385Vang-Master 87318548521591230514.66.625/815.95/8161500680152'