Ronstan Series 40 BB Block, Single, Clevis Pin Top Wichard 2 11/64" (55mm) Ball Bearing Blocks Works with 505-75 or 505-76

Works with 505-75 or 505-76 for a 4:1 purchase

Please check your fitting to see which model you require

Adjustment Settings - 12 mm

Thickness: 1 21/32 in

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

Ronstan Series 40 BB Block, Single, Clevis Pin Top Wichard 2 11/64" (55mm) Ball Bearing Blocks Works with 505-75 or 505-76Product 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