Ronstan series 40 Ball Bearing Orbit Block™, Quad, Shackle Head

Ronstan series 40 Ball Bearing Orbit Block™, Quad, Shackle Head

18 in stock

The Ronstan Ball Bearing Orbit Block™ Quadruple Block with Shackle combines massive load capacity with full articulation through its stainless-steel shackle head. This four-sheave system uses high-performance ball bearings to provide smooth, effortless trimming even in high-mechanical-advantage configurations. The swiveling head allows perfect alignment with the load and prevents unnecessary line twist. It is the ideal technical solution for mainsheet systems requiring flexible orientation and maximum mechanical power.

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At Saildeck Gear, we specialize in technical rigging, blocks, winches, and deck hardware for boats between 30 and 60 feet. We know that every boat is different: working loads, mast dimensions, the type of maneuver, and how you use your boat—cruising, racing, or charter—all affect what you actually need.

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Tell us which product you’re interested in and which boat you’ll be installing it on, and we’ll prepare a quote tailored to your setup, including technical advice and with no obligation.

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