Best in 7 days
![Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]](https://cdn.shopify.com/s/files/1/0494/1627/4077/products/70615XL.jpg?v=1676525000)
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]Series 40 Ball Bearing Block Single Upright Lead Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Applications: Typically used for halyards at the mast base. Materials: Acetal ball
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
![C. Sherman Johnson Cotter Pin Kit [37-510]](https://cdn.shopify.com/s/files/1/0494/1627/4077/products/71574XL.jpg?v=1676527149)
Best in 7 days
4.3 ★★★★★
Based on 1478 reviews
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Product Reviews
★★★★★ 5
Daughter approved
Size: 1 Little Kid, Color: Turquoise/Multi
My daughter picked out these shoes and she absolutely loves them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Not stiff or tight…
Size: 13.5 Little Kid, Color: Turquoise/Multi
My niece loved them. So many of the slips in shoes are too stiff and tight, this one was easy on, not stiff or tight, just perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
★★★★★ 5
De acuerdo a lo esperado
Size: 1 Little Kid, Color: Lavender
Muy buena calidad y medida correcta
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2025
★★★★★ 5
Excelente en todo sentido
100% Recommended; expected product and excellent service from the seller. Package received in Colombia, without problems.
100% Recomendado; producto esperado y excelente servicio del vendedor. Paquete recibido en Colombia, sin problemas.
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Reviewed in the United States on August 14, 2024
★★★★★ 3
Narrow
Size: 11.5 Little Kid, Color: Lavender
These were so cute, but run narrow. My daughter tried wearing them but she kept complaining they were too tight. Wish we could love them because I love how easy this brand is for my daughter to get on her feet
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Reviewed in the United States on August 19, 2025
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