Series 3 45mm Block Stanchion Lead. Stanchion lead. Designed for use on 25mm 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 dayboats and cruising yachts. Ideal for mainsheets, vang tackles, lead blocks or wherever a powerful and compact purchase tackle is required. A comprehensive range of cam cleat, fiddle, and fiddle cam cleat versions are available. 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 120mm 4.72 . Sheave Size Single 45mm x 14mm 1-3-4 x 35/64 . Fiddle 30/58mm x 12mm 1-3/16 /2-1/2 x 35/64 . SWL 385kg 848lbs . Max Rope Diameter 10mm 3/8 . Break Load 740kg 1,698lbs Stanchion lead. Designed for use on 25mm tubes, with a swivelling action with up-down movement allow Plain bearing blocks. Barton plain bearing blocks have a precision moulded Acetal sheave running on Single 45mm x 14mm 1-3-4 x 35/64 Fiddle 30/58mm x 12mm 1-3/16 /2-1/2 x 35/64 SWL 385kg