How do I know this part fits my boat?

Check the Compatibility panel. We only list a class when the fit has been verified. If your class is not listed, contact us with your class and the part you are replacing and we will check.

Is this a genuine manufacturer part?

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Ronstan

Manufacturer part # RONRF21107

Ronstan Series 20 BB Block, Single, Suits 10mm (3/8") Webbing

Name: Ronstan Series 20 BB Block, Single, Suits 10mm (3/8") Webbing
Brand: Ronstan
SKU: RONRF21107
Price: 15.64 USD
Availability: InStock

$15.64 USD

~~$18.40 USD~~ $15.64 USD

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Description

Ronstan's Ball Bearing 20mm, conceived and engineered for the demands of competitive sailing in skiff, Olympic and sports boats classes, have rapidly become the international choice for high performance hardware.

Our Part # RONRF21107 | Ronstan Part # RF21107

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Verified to fit:

WASZP

Fit only. Check your current class rules for legality.

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Ronstan Series 20 BB Block, Single, Suits 10mm (3/8") Webbing