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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
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Description
Ronstan Series 25 Utility Block - Single - Swivel Shackle HeadSeries 25 Utility Block Single Swivel Shackle Head Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase. Features: Lightweight durable construction Economical Maintenance free Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters, etc
Series 25 Utility Block - Single - Swivel Shackle HeadStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase.
Features:
- Lightweight durable construction
- Economical
- Maintenance free
Applications:
- Vang, cunningham and trapeze retriever systems on dinghies
- Leech line tackles, bunk adjusters, etc on larger boats
Materials:
- U.V. stabilized acetal sheaves
- Grade 316 Stainless Steel cheeks
Specifications:
Sheave Ø: 25mm(1")
Max. Rope Ø: 6mm(1/4")
Pin Ø: 4mm(5/32")
M.W.L.: 150kg(330lbs)
B. L.: 300kg(660lbs)
Weight: 20g(0.7oz)
Manufacturer : Ronstan
Manufacturer Part No : RF573
UPC : 9316800003877
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 24 reviews
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Product Reviews
★★★★★ 5
Slip ons worth slipping on…
Size: 9.5, Color: Black, Size: 9.5, Color: Black
Very stylish and comfortable. I love how light they are because I’m on my feet all day. The black leather is very deep and very rich. The elevated sole gives me a tad more height, too…which I like. And yes, they’re slip ons. Don’t let the laces fool you. For under $40, these shoes are a strong value to consider…
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
I feel I’m walking on clouds
Size: 10, Color: Brown
I’m on my feet 6–8 hours a day working at the dealership, constantly walking the lot and helping customers—and I’ve gone through a lot of shoes trying to find something that actually holds up.
These Bruno Marc MaxFlex Dress Sneakers honestly surprised me. They look sharp and professional enough for work, but feel more like a comfortable athletic shoe than a stiff dress shoe. From day one, there was no break-in period, no soreness, just all-day comfort. I feel I’m walking on clouds!
If you’re in a job where you’re standing or moving around a lot but still need to look polished, these are hands down the most comfortable work shoes I’ve owned.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Dress shoes
Size: 9, Color: Light Brown/Coffee
Very comfortable and well made shoes.
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Reviewed in the United States on May 24, 2026
★★★★★ 3
Runs big
Size: 10, Color: Black
Too big , looks okay. Try 1 size down
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Great shoes
Size: 10 Wide, Color: Brown, Size: 10 Wide, Color: Brown
This shoe is incredibly comfortable and durable.
I work in custodial work as management. However, sometimes I have to help my team when we are low manned. Just recently I had to help my team auto scrub a restroom. My shoes felt lightweight and were completely easy to clean. I was worried I would be slipping on sudsy water. To my surprise, these shoes gripped on to the floor nicely.
I love the versatility of having a working shoe with the great style Bruno Marc provides. The shoe is breathable and true to size. I ordered the black pair as well and have had them for about 3 months. Highly recommend these amazing shoes.
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Reviewed in the United States on May 28, 2026
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