Ronstan Series 40 BB Block, Single, Clevis Pin Top Wichard 2 11/64" (55mm) Ball Bearing Blocks Pre-programmed with World Sailing 5-4-1-0

Pre-programmed with World Sailing 5-4-1-0 and Match Racing start sequences

Use 97-49 (sold desperately) for a solid backing plate

Please check your fitting to see which model you require

- 40mm (1 9/16in

Adjustment Settings - 12 mm

Ronstan Series 40 BB Block, Single, Clevis Pin Top Wichard 2 11/64" (55mm) Ball Bearing Blocks Pre-programmed with World Sailing 5-4-1-0Product Description Ronstan Series 40 BB Block, Single, Clevis Pin Top Product Information Alloy sheaves running on Torlon ball bearings provide high performance & low friction. Features Low friction Torlon ball bearing system Lightweight Cheek cut outs for easy bearing maintenance Oversize Torlon balls minimise friction Specifications Sheave 1 9 16 in. Max. Rope 1 4 in. Pin 7 32 in. M. W. L. 530 lb. B. L. 2430 lb. Weight 2. 1 oz. Applications Primary