This Harken Zircon 40 mm single block is an ultra-free-running block developed for sailing where low friction and efficient trimming are essential.
The block is equipped with ceramic ball bearings, which provide an extremely smooth operation and make it particularly suitable for use in very light air.
With low weight, a compact length, and capacity for lines up to Ø8 mm, it is a precise choice for performance-oriented sailing.
Key features
40 mm single block
Ceramic ball bearings
Ultra-free-running construction
Suitable for sailing in very light air
Max. line Ø8 mm
