Series 55 Ratchet Orbit Block - Single - Swivel Head - Auto have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.

Features:

• Up to 20:1 holding power


• Smooth easing of sheets


• High performance cleating


• Swivel shackle head for unlimited block rotation.


• Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.


• Automatic


• Head fitting: grade 316 stainless steel