SKU: 35859400103

Ronstan Series 40 Orbit BB Quin Block w/Swivel Shackle [RF48500]

Sale price$92.57 Regular price$102.86
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Description

Ronstan Series 40 Orbit BB Quin Block w/Swivel Shackle [RF48500]Series 40 Orbit BB Quin Block with 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

Series 40 Orbit BB Quin Block with 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: 8.5 oz.
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: 35859400103

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Jeremy
Birmingham, US
★★★★★ 4
As far as punk rock inspired shirts go this one is
Color: Off White&black, Size: XX-Large
The shirt looks nice but the material isn't what it looks like in the picture. It's actually kind of thick, almost like a weaved cotton pattern, if that makes sense. I got it during a heatwave, couldn't wear it. But if you're looking for a decent fall weather t-shirt, well worth the grab.
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Reviewed in the United States on August 28, 2025
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Lori Ann Rojas
Lake Worth, US
★★★★★ 5
A shirt that makes you feel good...
Color: Off White&black, Size: XX-Large
Im very pickey about fabric and the way it fits my body. This shirt is comfortable. I love the colors. I liked it so much, I bought another one. This shirt makes me feel good when i put it on.
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Reviewed in the United States on September 28, 2025
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Eric Graham
Pawtucket, US
★★★★★ 3
Go up a size
Color: Off White&burgundy, Size: X-Large
Material feels great but sizes are not accurate. If you’re a XL, go up a size.
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Reviewed in the United States on April 4, 2026
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Javi Elenes
West Palm Beach, US
★★★★★ 5
True to size
Color: Off White&burgundy, Size: Small
Loved the shirt !
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Reviewed in the United States on January 1, 2026
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MBL
Alexandria, US
★★★★★ 5
I returned- did not like the fabric pattern
Color: Off White&black, Size: Large
I returned- did not like the fabric pattern. Nothing wrong w the shirt itself. pic looks better than it is.
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Reviewed in the United States on January 12, 2026

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