This Harken Zircon 40 mm single block with becket is an ultra-free-running block for efficient trimming on sailboats.
The block is constructed with ceramic ball bearings, which provide very low friction and make it particularly suitable for sailing in very light air.
With low weight, high breaking strength, and space for lines up to Ø8 mm, it is a professional choice for precise and easy sail trim handling.
Key features
40 mm single block with becket
Ceramic ball bearings for very low friction
Suitable for trimming and sailing in very light air
For lines up to Ø8 mm
Max working load 115 kg
