Ronstan Series 55 Orbit Block, Ratchet with Becket and Cam Cleat Murrays Part# 21-56130 The Ronstan Orbit 55 Jib Block Ratchet Orbit Block™ has the highest holding power available and is ideal as a jib sheet cleat for the Hobie® 18, Hobie® 20, etc. The automatic ratchet mechanism engages when load is applied, but switches off when it's released. Features: Automatic ratchet Up to 20:1 holding power Smooth easing of sheets High performance cleating Materials: Sheave: Hard anodized aluminum Ball Bearings: High compression strength carbon black Aceetal Frame/Cheeks: Toughened, glass fiber-reinforced nylon Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema® Specifications: 2-5/32" sheave 3/8" maximum line 550 lb. maximum working load 1650 lb. breaking load Weighs 7.4 oz. Ronstan Part# RF56130
