Selden Blocks – ARB45 Single

AUTOMATIC RACHET BLOCK INSIDE

1. When the block is low-loaded the ratchet mechanism is disengaged and the sheave spins free.
2. When the load on the block increases the ratchet engages and the sheave is locked in one direction.

•  5 mm Delrin ball bearings & 0 45 mm carbon fibre reinforced polyetherimide sheave.
• The sheave automatically changes from free-turning to rachet 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.