System 30 - End Control, Double Plain Bearing Sheaves, Becket for Control Line oversized-item The BBB60 Double Block features

The BBB60 Double Block features two 60 mm sheaves optimized for high dynamic loads

Polymer thrust bearings resist side loads

System 22 is used for keelboats and smaller yachts

This is the ideal block for guiding a sheet to a winch

System 30 - End Control, Double Plain Bearing Sheaves, Becket for Control Line oversized-item The BBB60 Double Block featuresThe Genoa End Control is part of the System 30 deck hardware range. It features 40 mm plain bearing sheaves for 4: 1 or 6: 1 purchase of the control lines. The hole in the base is a "dead end" becket for a control line. The fitting is anodized aluminium with a shock absorbing rubber buffer. Ideal dimension of the control line is 7 mm. See Seldn's line packages. Control lines, article numbers and descriptions 400 500 09 CONTROL LINE, BLACK L=9000 400