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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan Series 30 Ball Bearing Orbit Block - Single - Becket - Lashing headSeries 30 Ball Bearing Orbit Block Single Becket Lashing Head Ball Bearing Orbit Blocks boast the highest strength to weight ratio available. This is achieved through all composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber reinforced composites in the block head, cleat arms and
Series 30 Ball Bearing Orbit Block - Single - Becket - Lashing HeadBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options.
Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.
Features:
- Lightweight
- Highest working load in its class
- Secure, versatile and secure attachement
- Low profile and compact
- Ultra low profile thru-sheave becket
- RF35101 accepts RF1850S shackle in both orientations to create a conventional loop top block
- Self-lubricating Nylatron® sheave and full contact bearing for high dynamic loads
Applications:
- Mainsheet systems and spinnaker sheets on dinghies to 5M(16')
- Halyard, vang and backstay applications on boats to 5M(16')
- Control line applications on larger yachts
Materials:
- Sheave: High compression strength carbon black Acetal
- Ball Bearings: High compression strength Acetal
- Frame/Cheeks: Toughened, glass fiber reinforced Nylon
- Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
Specifications:
=Sheave Ø: 30mm(1-3/16")
Max. Rope Ø: 8mm(5/16")
M.W.L.: 300kg(660lbs)
B. L.: 600kg(1,320lbs)
Weight: 22g(0.8oz)
Manufacturer : Ronstan
Manufacturer Part No : RF35101
UPC : 9316800404940
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
4.4 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Great Shirt for WOMEN
Color: All White, Size: Medium
Fantastic Shirt for Women! I'm 5'9" 150 lbs and ordered a medium. Its form fitting, stretchy and feels great! No Wrinkles
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
Love the fit
Color: All White, Size: Small
I always feel like shirts are a little too baggy but this one does for incredibly nice. The material is really light feeling too. Definitely will buy more of these shirts
Edit: I’ve bought multiple of these shirts and they’re absolutely amazing. They’re also comfy and really good for the summer. There was a review that mentioned to avoid this shirt because they iron it. This shirt is nylon and spandex. I don’t understand why you would expose it to high heat like that especially knowing high heat can damage certain type of material. If you need to iron it, make sure your iron can adjust to those two fabric settings or take it to a place that professionally can do that.
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Reviewed in the United States on January 23, 2025
★★★★★ 4
Good shirt, but not perfect
I have bought three of these shirts. They fit well, look good, good value for the price, don't wrinkle easily. The fabric is VERY heavy and does not breathe well, so they are better suited for winter than summer wear. The placket tends to bunch up when you're seated, so wearing an undershirt can be helpful.
The only thing I'd change about it is the fastener on top would be better as a standard button, or be fastened closer to the shirt. When worn buttoned-up, there's enough room between the two halves of the shirt that one side folds down and there's an unnecessary collar gap that doesn't look great. When worn unbuttoned, the fastener dangles (which again, doesn't look great). The shirt also doesn't have collar stays, so the collar can roll up.
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Reviewed in the United States on April 27, 2026
★★★★★ 3
Heavy shirt
Color: All White, Size: Small
Looks good but is heavy, not like a traditional long sleeve shirt, I always use long sleeve shirts every day, but this one is heavy comparing with the other ones that I have
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Reviewed in the United States on February 6, 2025
★★★★★ 5
Great fit
Color: All White, Size: Medium
Love the fit for my son
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
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