The Barton Size 0 Double Swivel Block is designed for small to mid-range vessels and comes with nylon sheaves suitable for all ropes, including braided dyneema. Barton is known as a great value for money and practical for many applications. For racing applications, consider getting the ball bearing versions.Barton Size 0 Blocks suit outhauls, downhauls, and kickers for smaller dinghies, including Laser, Topper, and Optimist boats.SpecificationsWeight: 46 gDimensions: 68 30 21 mmSize: 0 (20 mm)Block Type: SwivelNumber of Sheaves: DoubleBearing Type: PlainSheave Size: 20 mm 8 mm (25/32″ 5/16″)Max Rope Diameter: 6 mm (1/4″)SWL (Safe Working Load): 275 kg (606 lbs)Break Load: 550 kg (1210 lbs)Max Rolling Load (Ball Bearing Blocks): 130 kg (28)DownloadSize 0 Block Range .input-wrapper a { text-decoration: none; / Removes underline / background-color: transparent; / Ensures no background color / } .input-wrapper a:hover { text-decoration: underline; / Adds underline on hover / background-color: transparent !important; / Removes grey highlight / }