Series 30 Ball Bearing Orbit Block™ - Stand Up Swivel. Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available 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 include lightweight construction, highest working load in its class, secure versatile attachment options, and a low-profile compact design. Applications include mainsheet systems and spinnaker sheets on dinghies to 5M (16'), halyard, vang and backstay applications on boats to 5M (16'), and 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 Ø: 30mm (1-3/16"), Max. Rope Ø: 8mm (5/16"), M.W.L.: 300kg (660lbs), B.L.: 600kg (1,320lbs). Rainforest listing technical notes: Item dimensions L x W x H: 4 x 1 x 1 inches; Item Weight approx. 0.03 kg (1.06 ounces).
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