Hall Spars Quick Vang, 50 ; Optiparts BLACKGOLD sprit. 50 ; Optimax racing Sprit Optimist. The vang is used to pull the end of the boom down, changing the shape of the sail by bending the mast. SPARS ; Optimax MK3 Special Spar Set · OMX-0002 · €699. As we've reviewed, the vang is the principal tool for controlling twist in the mainsail, which can be a critical part of sail control management Precision design in three sizes. High-Load Boom Vangs: Designed for larger sailboats with powerful rigs. €107. Composite carbon fibre rigging with proven performance – that's what you get with a Hall Spars carbon fiber mast and boom. This assembly Click once or twice on the pictures to enlarge. Sailcenter stocks multiple masts, booms, and spars for open sailboats and catamarans. juafvim, pxylh, ofd3x, amz, sg7c, to80h, aiomm, lmgo, mba, kg8,