Suitable for up to 6mm rope. A range of high quality 25mm single blocks from Seasure, all of which have been tested in the most extreme race conditions and proven over time, and you will often find them in use after more than 30 years! The high strength to weight ratio and simple construction give years of trouble free service.

The '00' range offers an unparalleled range of control line configuration opportunities. They feature hollow rivets for lightness and tough plastic sheaves that provide a good bearing surface allowing easy rotation under a range of load conditions. The robust electro-polished 316 stainless steel construction also gives a high chafe resistance should any feed or take-off misalignment occur. Made in the UK from 316 stainless steel and tough "Arnite" plastic.