Harken 57 mm Black Magic, AirBlock Single swivel/becket Cat. No. HAR 195x Weight 1 lbs
BLK-57MM Single Swivel/Becket Use 57 mm Black
Magic® AirBlocks® on offshore boats. These strong,
lightweight blocks are sculpted aluminum, with Torlon® rollers and
carbon-black balls for strength and UV protection. Rollers are housed
in a unique center cage and are isolated for less friction. Blocks
feature a three-way head system and come in high- and low-load
configurations.
Use for:
Sheets
Halyards
Running backstays
Control lines
