Barton fiddle block – variloc & becket – size 3 – 4 are 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. The plain bearing blocks have a precision moulded Acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads. Barton’s unique super low friction ball race systems, featuring Acetal sheaves and Delrin ball bearings, run on a large diameter centre boss. This allows more load bearing balls to be fitted, even under high loads.