A strong, lightweight range of blocks for use on dinghies, day boats and light cruising yachts. Ideal for mainsheet, vang, lead blocks or wherever a powerful and compact purchase tackle is required. Sheave size: 45mm x 13mm (1 3/4 x 1/2") Max rope diameter: 10mm (3/8")  SWL: 400kg (881lbs) Break load: 8000Kg (1763 lbs)  Length: 80mm Weight: 60g