Molded thumb piece. 13 mm (0.51") Monster Sling webbing (36% Dyneema/64% nylon * Range Finder tells you at a glance if you"ve chosen the right size cam for the placement * Optimized cam angle for more outward force. Color-coded sewn slings and tubing * Machined cam stops. CNC machined for much greater precision than stamped or extruded cams * 7075-T6 aluminum. Sizes #00-#6. CE/UIAA certified. Hand built, inspected and individually proof tested in Bend, Oregon