Johnson Lifeline Toggle Jaw with Eye, 105540 Shackles_Snap Shackles these blocks have self-aligning features

these blocks have self-aligning features to maximize efficiency and reduce wear to both line and block

Designed to be durable

Harken 76mm Midrange Double Block with Becket allows either a 2:1 or 3:1 purchase

with fast trim and release under high or low loads

Large sheave diameter and high working loads make them suitable for sheet and control blocks on medium to large offshore boats

Johnson Lifeline Toggle Jaw with Eye, 105540 Shackles_Snap Shackles these blocks have self-aligning featuresJohnson now offers its popular lifeline fittings with eye ends for today's high tech, low stretch line. They recommend 1 4" (6mm) Dyneema rope in grey or blue. This is a 12 strand single braid that is 1 7th the weight of 1 4" 1x19 cable, offering the same strength at about the same cost. Johnson recommends changing out the line at 4 year intervals.