Selden 404-101-15 Block, BBB40 Fiddle, Becket, Cam Chandlery-Boat-Hardware-Hull-Fittings An Engineering drawing of the

An Engineering drawing of the cleat can be found HERE

Base Fixing Hole Spacing n/a Overall Length 64 mm Overall Width 16 mm Overall Thickness (Base Plate) 2 mm Channel Width 16 mm Loop Inside Diameter  15 mm Loop Outside Diameter 25 mm Weight 61 grams An Engineering drawing of the boom slide A4258 from Allen can be found HERE

check for signs of cracking or stress on the fitting

Lashing or splicing provides a variety of options for securing the block at exactly the right height to maintain a fair lead

Contoured elasticated waistband

Selden 404-101-15 Block, BBB40 Fiddle, Becket, Cam Chandlery-Boat-Hardware-Hull-Fittings An Engineering drawing of theTechnical Features Stainless Steel ball bearing races, stainless Steel ball bearings and glass fibre reinforced sheave for best bearing strength even under high dynamic loads Acetal bearing cage to prevent ball to ball friction and to reduce weight Composite, 50 50 Glass Fibre Polyamide Specification Max. Rope (mm) S. W. L (kg) B. L (kg) Weight (g) 7 250 500 115