SKU: 78073060103

Ronstan Series 40 Orbit BB Block w/Becket & Swivel Shackle

Sale price$170.63 Regular price$189.59
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Description

Ronstan Series 40 Orbit BB Block w/Becket & Swivel ShackleSeries 40 Orbit BB Quad Block with Becket & Swivel Shackle The Series 40 ball bearing Orbit Blocks provides the perfect balance of strength, performance, and reliability. They offer class leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks the perfect balance of

Series 40 Orbit BB Quad Block with Becket & Swivel Shackle

The Series 40 ball-bearing Orbit Blocks™ provides the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.

As well as traditional single swivel blocks, the range includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is highly versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.

Series 40 Orbit Blocks™ are fitted with our carbon-reinforced C-Cleat™ for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and adjustable for setting your preferred cleating angle.

Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range.

High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high-strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads.

Features:

  • Class-leading dynamic and static load ratings
  • Lightweight, yet strong. Toughened, glass fiber reinforced nylon replaces stainless steel straps used in our traditional utility blocks
  • Low friction 2-stage ball bearing system for efficient and effortless trimming
  • Soft attachment, lashing and traditional swivel shackle head options
  • Low profile and compact
  • High performance cleating

Applications

  • Mainsheet systems and spinnaker sheets on dinghies, off-the-beach catamarans and sportsboats to 8m (26ft)
  • Halyard, vang and backstay applications on boats to 9m (30ft)
  • Control line applications on larger yachts

Specifications:

  • Sheave Ø: 1-9/16 in.
  • Max. Rope Ø: 3/8 in.
  • Pin Ø: 5/32"
  • M.W.L.: 1320 lb.
  • B. L.: 2650 lb.
  • Weight: 7.1 oz.

Manufacturer : Ronstan
Manufacturer Part No : RF48410
UPC : 9316800624843
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 78073060103

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4.3 ★★★★★
Based on 28 reviews
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Product Reviews
D
DogMomReviews
Battle Creek, US
★★★★★ 5
Comfortable QUAY quality sunglasses
Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters
QUAY is one of my favorite sunglass brands and these sunglasses definitely don't disappoint! They're very comfortable and fit well on my face. They're lightweight which I love but also have the quality I have come to expect from QUAY. The only thing that would make me like them more is if the lenses were a little darker.. I prefer darker lenses as I have very light sensitive eyes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
R
Verified Purchase
Rich man
Grantham, US
★★★★★ 4
Nice
Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters
Subdued retro look. Dark lens. Comfortable fit. Wish they came in amber.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2026
R
Ryan
Omaha, US
★★★★★ 5
Thick, robust and the perfect blend of dressy/casual
Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters, Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters
To be honest this is my first pair of sunglasses that costs more than $25. I never really knew why one would spend more on something you might sit on or lose. Decided to try these after realizing I wanted better clarity in the lenses. First impression on trying them on was the weight difference. These are quite a bit heavier than my cheaper pairs. Once I examined the materials I could see why. The build quality is excellent. The tortoise pattern is rich and looks high quality. Love the polished metal accents. At first I was a little leary about the metal on the front edges (i'm not a very "shiny" guy") but now I think it helps strike a balance between dressier glasses and casual. Very glad I stuck with these through the first few awkward moments. Wasn't sure about the shape at first but now i'm locked in. Curious to see what else Quay has to offer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 1, 2025
M
Monty
Waukegan, US
★★★★★ 3
Stylish looks, good lenses, warped frame?
Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters
These sunglasses have nice build quality and good lenses on them. The green tint is not too strong and the style is excellent. My frames sit crooked on my face out of the box and they do not lay evenly on the counter when laying them down on the top surface. you can tap on one of the arms and the frames wobble. Looking at the main piece where the lenses are, the whole thing appears to be slightly twisted., which would explain the crooked fit on my face. Granted, our faces and ears aren't usually perfectly symmetrical, but this seems to be a fault of the sunglasses. I have tried lightly bending and twisting the frames to straighten them out, but I have not been entirely successful in doing so in fear of breaking them. They are comfortable to wear and look pretty stylish, but some information on adjusting the frames would be nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2025
C
CC
Draper, US
★★★★★ 5
Sleek and stylish
Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters, Color: Dark Tort/Green, Polarization Type: Non-Polarized, Lens Width: 50 Millimeters
Sleek and stylish sunglasses in a dark tortoise pattern. Simple classic design. Unisex design and fit. I especially like the wired sides that are easy and safe to customized to your head, ear, nose fit and comfort. Seems like a good value for quality, design, comfort and fit. Comes with a slim case. Nice sunglasses overall!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 9, 2025

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