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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
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Description
Ronstan Series 40 BB Double Block w/ Swivel Head & BecketProduct Description Ronstan Series 40 BB Double Block w Swivel Head & Becket 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. Features: Low friction Acetal or Torlon bearing system Lightweight Cheek cut outs for easy bearing maintenance Specifications: Sheave 1 9 16 in. (40mm) Max. Rope 3 8 in. (10mm) Max. Cable in (mm)
Product Description
Ronstan Series 40 BB Double Block w/ Swivel Head & Becket
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.
Features:
Low friction Acetal or Torlon® bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Specifications:
Sheave Ø - 1 9/16 in. (40mm)
Max. Rope Ø - 3/8 in. (10mm)
Max. Cable Ø - in (mm)
Pin Ø - in. (mm)
M.W.L. - 1100 lb. (500 kg)
B. L. - 2650 lb. (1200 kg)
Weight - 5 oz. (142 g)
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
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.
Features:
Specifications:
Applications:
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
4.9 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Gracias
Color: Gold/G-15 Green, Lens Width: 51 Millimeters
Llenaron todas las expectativas. Gracias!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
Love these Ray Bans.
Color: Legend Gold/Green Vintage, Lens Width: 51 Millimeters
Ray Ban quality and great style. Always get compliments and asked where to get a pair.
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Reviewed in the United States on September 8, 2025
★★★★★ 4
Too small
Nice glasses, but very small. Will be good for a teenager, otherwise excellent
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Reviewed in the United States on March 25, 2025
★★★★★ 5
Polarized stylish RayBans
Color: Black/G-15 Green Polarized, Lens Width: 51 Millimeters
Style is versatile for all occasions, fits to nose comfortably and nose pads are adjustable. Polarized for maximum protection with RayBan stamp on lens, great quality glass lenses, with stylish border all around.
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Reviewed in the United States on April 17, 2025
★★★★★ 5
Love them
Size: 5.5, Color: Red Pepper
I have gotten so many compliments on these shoes! They’re true to size and comfortable. Because of the material feet might sweat easier if hot but they dry quick. Quality is great and the color looks good, it’s more of a orange/red color. I got a 5.5 size
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Reviewed in the United States on May 21, 2026