This Harken 57 mm plastic sheave with ball bearing is a spare part for marine block systems where a worn or damaged sheave needs replacement.
The sheave is designed for use in a 57 mm block and provides a practical solution for maintaining sailing equipment on board.
A professional choice for boat owners and sailors who want to keep their blocks functional with an original Harken spare part.
Key features57 mm sheave for block
Made of plastic
With ball bearing
Harken spare part
Suitable for maintenance of sailing equipment
