Stronger version of the Hexaratchet II+2 with 8:1 holding power. Beefier posts and wraparound straps handle higher working loads. Sheave: Teflon-impregnated Hardkote anodized aluminum Bearings: Delrin Sheave Size: 3" (76mm) Line Diameter: 9/16" max. Cheek Material/Finish: Plastic with wrap-around stainless straps Cleat: 1556 and 1566: 280 Cam-Matic Ratchet: 8 to 1 holding power, slide off/on switch