SKU: 21093288519

Ronstan Series 50 All Purpose Block - Single - Universal Head [RF51100]

Sale price$32.87 Regular price$36.52
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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17

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Description

Ronstan Series 50 All Purpose Block - Single - Universal Head [RF51100]Series 50 All Purpose Block Single Universal Head All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock universal head can be fixed in either of

Series 50 All Purpose Block - Single - Universal Head

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required

Features:

  • Exceptionally high working loads
  • Low maintenance, long service life
  • Self lubricating sheave
  • Captive Lock™ universal head
  • Slotted pin shackle eliminates fouled lines


Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10M(33')

Materials:
  • Nylatron® sheave
  • Grade 316 stainless steel load strap and head fitting
  • Impact and U.V. resistant, fiber reinforced Nylon cheeks


Specifications:
Sheave Ø: 50mm(2")
Max. Rope Ø: 12mm(1/2")
Max. Pin Ø: 5mm(3/16")
M.W.L.: 750kg(1,650lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 118g(4.1oz)
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: 21093288519

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Richard Rybacki
Belleville, US
★★★★★ 5
Great white sneakers
Size: 8.5, Color: Optic White Canvas/Optic White
Very comfortable from the first time wearing them. Also cleans up very easily with just soap and water
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
K
Verified Purchase
kevin eppler
Bozeman, US
★★★★★ 2
2 stars
Size: 11.5, Color: Ironstone Canvas/Ivory
Not very good quality. They are comfortable but they make this weird clicking sound when I walk. Wouldn’t buy them again.
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Reviewed in the United States on April 7, 2026
S
Verified Purchase
Spec
Carnegie, US
★★★★★ 5
Another winner
Size: 13, Color: Black Canvas/Ivory
I am a big fan of Cole Haan and these are no exception. As a person normally wearing a 13 wide, I appreciate the extra room in the toebox -- with the standard size 13. As a custom insole wearer, they work great. I will say the black laces is a safe choice, but a little boring in my opinion. I ended up switching them out with off-white laces, which I think gives them a little pop.
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Reviewed in the United States on May 24, 2026
K
Verified Purchase
Kelly Greenwood
Carnegie, US
★★★★★ 5
Sleek and casual
Size: 13, Color: Ironstone Canvas/Ivory
Very nice, light, casual and clean with the flexible and sleek sole instead of being big and clunky.
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Reviewed in the United States on February 17, 2026
F
FX
Massapequa, US
★★★★★ 4
Comfy, stylish canvas shoes
Size: 9, Color: Ironstone Canvas/Ivory, Size: 9, Color: Ironstone Canvas/Ivory
Good looking lightweight canvas shoes. Great with jeans and khakis. Comfy to wear and fits as expected. The soles do squeak a bit until you break them in. One thing to note is that bottom soles have a yellowish color to it. It’s pretty obvious when wearing white socks. Otherwise good and comfy shoes. Very lightweight. Has good quality shoe strings.
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Reviewed in the United States on November 15, 2025

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