Spinlock PXR Single Swivel Cam Cleat is the easiest cleat to release under load and is ideal for swiveling mainsheets and jibs. Not only does this cam compact roller action ensure quick and easy release under high loads, it resists accidental cleating and works especially well with high-performance lines. Spinlock anodized aluminum PXR Cam Cleat has a three-stage release control switch that enables the trimmer to select the release setting depending on the prevailing conditions and the task at hand. The light setting might be appropriate for continuously trimmed sheets, traveler controls, and vangs whereas higher setting might be better for halyards and occasionally adjusted lines. The SPPXRO810SW works with 5/16 in (mm) to 3/8 in (10mm) line, although sometimes it is a bit tight with 3/8 in (10mm) line, so try rotating the spring tension selector knob to the right and expanding the opening more. This solution may not solve all of the issues the PXR0810 has with thicker line. PXR hole spacing matches that of other cam cleats and swivels.