Davey & Co 59 mm Tufnol Fiddle Block - Eye, 4355/OO/13 Sailboat Blocks & Hardware_57 mm Carbo Ratchet Block - Swivel The semi-austenitic grades are 17-7

The semi-austenitic grades are 17-7 PH and PH 15-7 Mo

Electric and hydraulic furlers can be operated manually if power is lost

Simple and elegant

The Harken 086 29mm Triple Bullet Block is a simple

backstay tackle

Davey & Co 59 mm Tufnol Fiddle Block - Eye, 4355/OO/13 Sailboat Blocks & Hardware_57 mm Carbo Ratchet Block - Swivel The semi-austenitic grades are 17-7These traditional laminated plastic blocks are both strong in use and competitively priced. They incorporate a strong AISI 304 stainless steel frame and a brass bush bearings. All breaking loads have been certified by Germanischer Lloyd in Hamburg (1 daN equals approximately 1 kilo).