Double Blocks

The Ronstan Orbit Block™ Double Block with Strop stands out for extreme lightness in high-load systems. Replacing metal hardware with a synthetic-fiber strop dramatically reduces weight and provides...

The Ronstan Orbit Block™ Double Block sets the standard for low weight and efficiency for the modern sailor. By replacing the traditional steel chassis with reinforced composite materials,...

The Ronstan Orbit Block™ Double Block sets the standard for low weight and efficiency for the modern sailor. By replacing the traditional steel chassis with reinforced composite materials,...

The Ronstan Core Block™ Double Block offers an excellent balance of structural strength and low-friction performance. Designed with a universal bearing system, it provides smooth rotation under both...

The Ronstan Core Block™ Double Block offers an excellent balance of structural strength and low-friction performance. Designed with a universal bearing system, it provides smooth rotation under both...

The Ronstan Core Block™ Double Block offers an excellent balance of structural strength and low-friction performance. Designed with a universal bearing system, it provides smooth rotation under both...

The Ronstan Orbit Block™ Double Block with Link Head is the definitive engineering solution for reducing weight without compromising strength. Its Dyneema® textile connector replaces heavy steel hardware,...

The Ronstan Ball Bearing Double Block is an essential technical component for running-rigging systems requiring consistent efficiency and minimal deck friction. Its advanced high-precision ball bearing system allows...

The Ronstan Orbit Block™ Double Block with Dyneema® Link Head is the definitive engineering solution for minimum weight without compromising strength. Its Dyneema® connector head replaces heavy steel...