Ronstan 40mm Orbit Ratchet: Single w/ Swivel Shackle

Ronstan Series 40mm Orbit Block has a unique sheave design with 12 gripping faces, which directly resist loaded line movement and provide up to 25:1 holding power, nearly double that of its nearest competitor.

This lightweight block delivers superior rope wear performance and is lightweight. It has an on/off switch for manual operation, and it can automatically engage when load is applied to the block. In the Auto mode, it switches off when the load is released and allows the sheet to run freely. This is especially handy for smooth bear-aways and clean tacks with asymmetric spinnakers.

The Series 40mm is ideal for Optimist, Laser, 470, and 49er mainsheet assemblies; mainsheet and spinnaker sheets on dinghies with traditional and asymmetric spinnakers; sportsboats; and small keelboats. They are also used for control lines on larger yachts.