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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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Description
Ronstan Series 40 BB Triple Block w/ Swivel Head & BecketProduct Description Ronstan Series 40 BB Triple 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 Features a swivel shackle head for full 360 rotation Specifications: Sheave 1 9 16 in.
Product Description
Ronstan Series 40 BB Triple 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
Features a swivel shackle head for full 360° rotation
Specifications:
Sheave Ø - 1 9/16 in. (40mm)
Max. Rope Ø - 3/8 in. (10mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/16 in. (5 mm)
M.W.L. - 1320 lb. (600 kg)
B. L. - 3090 lb. (1400 kg)
Weight - 7.4 oz. (209 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
4.1 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 3
Where’s the Lumination ?
Color: 6692：Silver strap&blue dial, Color: 6692：Silver strap&blue dial
I received my watch today and noticed there is no lumination in the dark. That was part of the reason why I liked the blue face model with silver band. It’s the mechanical version. Please let me know. Is this a knock off ?
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Very nice
Color: 6692：Two tone strap&blue dial
I bought this for my husband, he really likes it
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Elegancia
Color: 6692：Two tone strap&blue dial
Excelente.
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Reviewed in the United States on September 26, 2025
★★★★★ 5
great product
Color: 6692：Two tone strap&blue dial
great deal - great watch.
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Reviewed in the United States on December 24, 2025
★★★★★ 1
You get what you pay for
Color: 6692：Silver strap&blue dial
I thought I'd give this a try but when I took it out of the box, it was the cheapest built watch I ever bought.
You get what you pay for. It was supper light so I don't believe it was stainless wrist band. Felt more like potted metal. Never again.
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Reviewed in the United States on January 19, 2025