Shim, 5 x 370 x 58 mm, for Mast Jack System D80/400 Fork/Toggle The BBB20 Single Ball Bearing

The BBB20 Single Ball Bearing Tie-On Block is a 20mm block designed for control lines on dinghies and keelboats as well as leech line applications on yachts

Prevents water intrusion between the deckring and the mast and is tightened around the deck ring with a hose clip and with adhesive tape around the mast

small  catamarans and keelboats

30 mm x 2500 mm long standard track with holes for M6 fasteners

Turnbuckle with Swage Terminal/Toggle terminals

Shim, 5 x 370 x 58 mm, for Mast Jack System D80/400 Fork/Toggle The BBB20 Single Ball Bearing5 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