Ronstan Mast Head Sheave (European)

Murrays Part# 51-13041700

This is a downhaul sheave for the basic Hobie 16 Downhaul system. Hobie Europe factory replacement "halyard" sheave.  But by the looks of their parts list its a down haul sheave that goes on the bottom of the gooseneck.

Specifications: 

-Bore (in) 1/4Max.

-Rope diameter (in) 1/4

-Diameter Ø (in) 1

-Weight (oz) 0.1

-Width (in) 3/8

Hobie Part# 13041700