Series 2 35mm Block - Stanchion Lead Stanchion Lead Designed for use on25mm Ø tubes, with a swivelling action with up-down movement allowing for a fair lead on control lines. A strong, lightweight range of blocks for use on dinghies and dayboats or as lead blocks on larger boats. A comprehensive range of multiple sheave options, together with fiddles and cam cleat blocks, allow powerful, lightweight tackles to be achieved Plain bearing blocks Barton plain bearing blocks have a precision moulded Acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads. Length:110mm(4.33") Sheave Size: Single: 35mm x 12mm (1-⅜" x 15⁄32") Fiddle: 30/45mm x 12mm (1-3⁄16" /1-¾ x 15⁄32") SWL: 370kg (815lbs) Max Rope Diameter: 8mm (5⁄16") Break Load:740kg (1630lbs)