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Sailboat Rope Clutches & JammersHow-To Guides

Hold and release lines under load with clutches and jammers matched to your rope diameters. Learn how to lay out and select clutches for a clean, efficient cockpit.

  • Spinlock single XAS rope clutch, black, for 6 to 12 mm line

    How Does a Rope Clutch Work?

    A rope clutch locks a loaded halyard, sheet, or reef line in place with a spring-loaded cam — and releases it cleanly even under load. Here's how the mechanism works,...

  • Spinlock Rope Clutch - XAS Spring Arm - For XA & XAS

    Rope Clutches & Jammers

    What is the real difference between a clutch and a jammer, and which one holds a loaded line safely? Learn how cam design, working load, and line diameter decide whether...

  • Spinlock Rope Clutches - Nut Inserts & Handle Spacer Bushes for Single Unit - For XCS

    Selecting Cleats vs Clutches

    Choose a cam cleat when you constantly adjust a line by hand, and a rope clutch or jammer when the line needs to be held under sustained load, such as...

  • Spinlock XX jaw lock open upgrade kit for rope clutches and jammers

    Jammers vs. Clutches

    The core difference is load release: a rope clutch can be opened and let a line run while it is still under load, whereas a jammer cannot be released under...