Ronstan sheave, Prindle 16 and Nacra
[21-0251]

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Replacement sheave for mast head on Nacra 5.5/5.8/6.0, Prindle 16 and Sol Cat 18. UV-resistant acetal material provides high strength and resistance to impact and wear, as well as excellent low friction properties for bearing applications.

Measurements:
1-1/2" diameter
3/8" sheave
1/4" hole
5/16" maximum rope diameter