Selden 404-401-01 Auto 45mm Single Ratchet Block Shop-by-Sport-SUP-Gloves The luff tube is now

The luff tube is now tapered

ISO Gennaker Shute

durability

A slack rig is more punishing on a hull & spars than a properly adjusted

Low friction 2-stage ball bearing system provides consistent performance over the full working load range

Selden 404-401-01 Auto 45mm Single Ratchet Block Shop-by-Sport-SUP-Gloves The luff tube is nowTechnical Features 5mm Delrin ball bearings 45mm aluminium sheave The sheave automatically changes from free turning to ratchet when the load increases. The sailor decides when the automatic ratchet kicks in. The switch over point is set using an allen key to adjust a screw inside the sheave. Fast, simple, precise Specification Max. Rope (mm) S. W. L (kg) B. L (kg) Weight (g) Shackle (mm) 8 150 300 64 4 Applications Dinghy main sheets Spinnaker sheets