SKU: 88390458157

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 Aug 30 - Sep 4

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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: 88390458157

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4.3 ★★★★★
Based on 21 reviews
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Sunni A.
Phoenix, US
★★★★★ 5
Love it!
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
Love this stuff and it's cruelty free!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
D
Verified Purchase
Digital Kamerad
San Leandro, US
★★★★★ 1
Alba packaging stinks
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
Complete waste of money! I ended up tossing it out because it’s IMPOSSIBLE to use. You should be able to twist the top to lock/unlock and spray it. NOPE. The top just spins and doesn’t catch or you cannot twist it at all. It’s also virtually impossible to spray. I had to hold it against my torso and press with both thumbs to get it to spray. Meanwhile, it’s leaking, the bottle is getting slippery. And then the spray goes EVERYWHERE, it’s not a narrow spray but it’s as if you’re dusting crops. I tried to see if it needed a certain pressure point, two fingers, bloody hell it’s not a Magic Mouse you should be able to unlock and spray it with one hand. Anyway, Alba needs to do some QC on their packaging. The last pump lotion I got, the pump also did not work. It just spun and spun and could not be unlocked. I had to wash and reuse the pump from an old bottle.
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Reviewed in the United States on June 21, 2024
K
Verified Purchase
Kindle Customer
Port Orchard, US
★★★★★ 5
A+
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
Best, safest sunscreen!
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Reviewed in the United States on March 4, 2026
A
Verified Purchase
Allison Adams Tucker (Consignment)
Charlottesville, US
★★★★★ 5
Best sunscreen brand! Fair, sensitive-skinned and rely on this
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
Alba Botanica is my favorite brand for sunscreen products and it checks all the boxes on my list: Excellent long lasting coverage, fine mist spray and easy coverage cream versions, great for my sensitive skin (no breakouts- I do NOT use it on my face though), the Hawaiian fragrance is pleasant, it’s reef safe (a big one for me as a snorkel/dive aficionado), and organic ingredients. The large size lasts 5 full days when on a boat all day in the Carribbean, and I only apply it twice (once in morning, and again midday.) I have fair skin, and I never burn. The spray version is, by nature of its aerosol capacity, a bit drying on the skin, but this is to be expected, and it creates a long lasting barrier. The cream version is a wonderful emollient, although not quite as long lasting. Best deal is only in the summer season at CostCo for a 2 pack... in my searches, Amazon has the best deal otherwise.
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Reviewed in the United States on January 28, 2021
P
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pain doc
Boise, US
★★★★★ 5
Good sunscreen
This sunscreen works well, and has coconut oil base, which is good for your skin. The cans have an adequate amount in them, but I would also like to see something twice their size, if that's possible.
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Reviewed in the United States on July 17, 2025

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