Spinlock's PXR0810 is a standard PXR Racing Cam Cleat suitable for 5/16 in (8mm) to 3/8 in (10mm) line. Spinlock claims it's the easiest cleat to release under load. Not only does this cam's compact roller action ensure quick and easy release under high loads, it resists accidental cleating and works especially well with high-performance lines. Spinlock's 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 ﾓlight in setting might be appropriate for continuously trimmed sheets, traveler controls, and vangs whereas higher setting might be better for halyards and occasionally adjusted lines. If you run into difficulties in using the PXR0810 with 3/8 in (10mm) line, 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.