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Ships within 48 hours · Estimated delivery Oct 3 - Oct 8
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Description
Ronstan Series 50 High Load Block - Single - Universal HeadSeries 50 High Load Block Single Universal Head Ideal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire. Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Features: Exceptionally high working loads Lightweight Cheek cut outs for easy bearing maintenance Suitable for both rope or wire Captive Lock universal head
Series 50 High Load Block - Single - Universal HeadIdeal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire.Captive Lock universal head can be fixed in either of two planes, or free to swivel as required.
Features:
- Exceptionally high working loads
- Lightweight
- Cheek cut-outs for easy bearing maintenance
- Suitable for both rope or wire
- Captive Lock universal head
- Slotted pin shackle eliminates fouled lines
Applications:
- Mainsheet
- Spinnaker sheets
- Halyards and other primary applications on boats up 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. Cable Ø:5mm(3/16")
Max. Pin Ø: 5mm(3/16")
M.W.L.: 800kg(1,760lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 117g(4.1oz)
Manufacturer : Ronstan
Manufacturer Part No : RF50100HL
UPC : 9316800241453
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
4.6 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 1
Not indestructible
Color: Orange
says it’s indestructible, but within an hour and a half it was destructed. There was a hole in the teeth area and it wasn’t squeaking.
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Reviewed in the United States on October 12, 2025
★★★★★ 5
Good ball.
Color: Orange
It was well made, very sturdy.
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Fun ball for my big Golden Retriever!'
Color: Orange, Color: Orange
It's big and has some weight to it in comparison with ither balls that hardly weigh anything. My 4 year old Golden Retriever can get his jaws around it only just! The squeaky is tough to get squeaking especially if you have a smaller dog. My dog is about 100 lbs and can just barely bite it hard enough to make it squeak. Very cute toy and I pretty sure this is going to last him a long time because it really seems very durable! He loves it!
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Ball
Color: Orange
My baby loves her new ball even though it arrived late it’s her new favorite toy
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Reviewed in the United States on May 10, 2026
★★★★★ 3
Very Hard
Color: Brown Bone
Good quality, bit really hard to squeak.
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Reviewed in the United States on June 7, 2026