Harken swivel bases are ideal when leads must rotate to face the trimmer. Ball bearing swivel bases feature dual rows of Delrin® ball bearings that swivel freely even under high loads. Bases include stand-up springs and a U-Adaptor to accept a variety of appropriate blocks. The H-144 is the standard configuration with a tall arm. It is ideal for mounting in the cockpit or for use on larger keelboats and small offshore boats. This base can be used with 57 mm & 75 mm Carbo® Air® Blocks, including Ratchet and Ratchamatic® Blocks. A 365 Standard Carbo Cam Cleat is included. Installation requires hole spacing of 19mm and 5RH fasteners (not supplied). This cleat is also available a low profile version.
Specifications
| Fixing hole Ø (mm) | 5 | 
| Recommended line - Max Ø (mm) | 12 | 
| Recommended line - Min Ø (mm) | 3 | 
| Total height (mm) | 146 | 
| Fixing hole spacing (mm) | 19 | 
| Weight (g) | 369 | 
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