The Viper 640 Primary Cunningham Line has a Harken 29mm Single block spliced to the Amsteel Blue (Dyneema SK-75) to allow for the 2:1 purchase on the control line. The other end of the Primary has an eye splice for connection to the boom.
- Diameter: 1/8
- Line: Samson Amsteel Blue.This high performance Dyneema SK-75 & Polypropylene single braid line has minimal stretch and zero water absorption.
- Includes: H2146, Harken T2 single