Shim, 10 x 285 x 40 mm, for Mast Jack System D63/400 Cover Upper block: 406-601-06

Upper block: 406-601-06

Ideal for sailors who occasionally want to optimize their boat for racing by use of overlapping jibs

This bow ring assembly makes for a flexible installation as the ring can be positioned and fixed in a perfect direction for the outboard end of the bowsprit to end up on the prolonged centerline of the boat

Diam-INNER: 35 mm

RCB full-batten system - low friction main sail handling

Shim, 10 x 285 x 40 mm, for Mast Jack System D63/400 Cover Upper block: 406-601-0610 mm thick aluminium mast jack shim. Pump up the mast, place shims below T base and mast heel and release pressure. Read all about Seldns mast jack systems on our website. https: support. seldenmast. com files 1723731359 597 107 E. pdf