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Size 1 30mm Plain Bearing Pulley Block Double Swivel & BecketThe Size 1 Plain Bearing Blocks have a 30mm (1 3/16″) sheave. The range is designed with an internal steel frame for added strength and durability. Also available in ball bearing sheave options, the lightweight modern design is available in variations that allow for a multitude of uses on every size craft.Suitable for up to 8mm (5/16″)rope.Specifications:Weight: 88gDimensions: 93 40 32 mmSize: 1 (30MM)Block Type: Swivel + BecketNo. of Sheaves: DoubleBearing Type: PlainSheave Size: 30mm x 12mm (1 3/16″ x 15/32″)Max rope diameter: 8mm (5/16″)SWL: 355kg (782lbs)Break load: 710kg (1565lbs)Max rolling load (ball bearing blocks): 245kg (540lbs) Quick Guide (pdf)