HARKEN Bullseye Swivel Base with 365 Carbo-Cam, 241 Product Type_Fairleads The 438 adapter plate is

The 438 adapter plate is perfect for mounting on masts and booms

Note: Special Order Only

Companions to the popular Harken Black Magic block line

The Harken 29 mm Carbo Outboard Lead Block Assembly is used on a bow pulpit as an outboard lead and it allows the furling line to travel outboard of the stanchion to keep the side deck clear

HARKEN Bullseye Swivel Base with 365 Carbo-Cam, 241 Product Type_Fairleads The 438 adapter plate isUse cam swivel bases 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. Bullseye Swivel Base with 365 Carbo Cam are simple swivel bases for main and jib sheets on very small boats or for control lines on boats of all sizes.