Series 30 Bb Orbit Block Single Swivel Shackle

Series 30 Ball Bearing Orbit Block#153 - Single - Becket - Swivel Shackle Head. Ball Bearing Orbit Blocks#153 boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. , Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets., Features: Lightweight, Highest working load in its class, Secure, versatile and secure attachement, Low profile and compact, Ultra low profile thru-sheave becket, Low friction 2-stage ball bearing system provides consistent performance over the full working load range , Applications: Mainsheet systems and spinnaker sheets on dinghies to 5M(16'), Halyard, vang and backstay applications on boats to 5M(16'), Control line applications on larger yachts , Materials: Sheave: High compression strength carbon black Acetal, Ball Bearings: High compression strength Acetal, Frame/Cheeks: Toughened, glass fiber reinforced Nylon, Link: UV stabilized, multi-strand impregnated SK75 Dyneema , Specifications: Sheave :