Heavy Duty Seat Slide With Aluminium Swivel. Designed for salt water use with a rust resistant powder coated base and anodised slide. 177mm x 177mm (7" x 7") swivel with 4 hole mounting hole...

Reelax pressure die cast alloy seat swivel top mount. Fits 75mm aluminium or 76mm stainless tube (see variations). Full nylon bush. Part...

Harken 57mm Aluminium Block - Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail...

Harken 75mm Aluminium Block - Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail...

Harken Black Magic Air Block - 75mm Aluminium Double Block with Swivel Black Magic Air blocks are a top favourite of Big Boat performance racers and cruisers. These lightweight, free-running,...

Harken 75mm Aluminium Block - Swivel, Becket Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for...

Harken 45mm Aluminium Element Block - Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust...

Harken Aluminium Element Mastbase Block - Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very...