Size 3 45mm Plain Bearing Pulley Block Double Swivel & BecketThe size 3 Barton plain bearing blocks have 45mm (1 3/4″ sheave size 3 block range incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fibre glass-filled nylon and Acetal sheaves to maximise their strength whilst keeping weight to a minimum. Suitable for use as mainsheet, vangs, lead blocks, or wherever a powerful and compact purchase system is required on dinghies, dayboats, and lightweight cruisers.Suitable for up to 10mm (3/8″) rope.Specifications:Weight: 143 gDimensions: 118 46 47 mmSize: 3 (45MM)Block Type: Swivel + BecketNo. of Sheaves: DoubleBearing Type: PlainSheave Size: 45mm x 13mm (1 3/4″ x 35/64″)Max rope diameter: 10mm (3/8″)SWL: 400kg (881lbs)Break load: 800kg (1763lbs)Max rolling load (ball bearing blocks): 270kg (595lbs) Quick Guide (pdf)