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Description
Ronstan Series 40 Stand up BlockProduct Description Ronstan Series 40 Stand Up Block Features Low friction Acetal or Torlon bearing system Lightweight Cheek cut outs for easy bearing maintenance Captive Lock universal head Low friction, 2 stage ball bearing system Slotted pin shackle eliminates fouled lines High static and dynamic load capacity Sheave 1 9 16 in. Max. Rope 3 8 in. Max. Cable Pin M. W. L. 770 lb B. L. 1760 lb Weight 2. 5 oz. Product Information Sheaves running on
Product Description
Ronstan Series 40 Stand-Up Block
Features
Low friction Acetal or Torlon bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Captive Lock universal head
Low friction, 2-stage ball bearing system
Slotted pin shackle eliminates fouled lines
High static and dynamic load capacity
Sheave 1 9/16 in.
Max. Rope Ø - 3/8 in.
Max. Cable Ø - -
Pin Ø - -
M.W.L. 770 lb
B.L. 1760 lb
Weight - 2.5 oz.
Product Information
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required
Applications
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sports boats up to 8m 926 ft)
Materials
Acetal ball bearings
UV stabilized Acetal sheave
Grade 316 stainless steel load strap and head fitting
Impact and UV resistant, fibre reinforced Nylon cheeks
Features
Product Information
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required
Applications
Materials
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
4.0 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Miracle. It's a miracle.
Size: Standard (Medium)
After years and years of searching for a comfortable pillow, I've finally found it!
I was hesitant to try latex because I have severe sensory issues and thought it would be weird, smelly and maybe noisy. I really couldn't envision how it would work.
The reality is a perfectly bouncy soft pillow that supports your head and neck at just the right height and has immediate bounce back so that when you turn in the night you don't have to waste hours or even minutes fluffing plumping positioning or any other nonsense... You just flip yourself over and go back to sleep. It's a friggin miracle!!!
There is a very faint though tolerable and fading scent of balloons. Not too bad for me, but might be annoying to some.
Overall, thank goodness I bought this pillow. I'm tempted to replace all my pillows with latex ones but... I don't really need any other pillows now! Maybe I will just so I have spares or something.
Granted, it's only been about a week but I expect it to be fairly durable and hold it's quality for quite a while.
So thrilled! Just so happy with this purchase! Ten stars, ten hearts!
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Very Firm Latex Medium, Appears Well-made
Size: Standard (Medium)
I love latex pillows, used them for decades. Then I got led astray! My neck reminded me I need firm, but soft and bouncy. This pillow is surprisingly firm for a medium. So think twice before ordering firm.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Superb neck support
Size: Standard (Medium)
Best sleep. Nothing like it.
Almost buoyant on my heavy neck
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Reviewed in the United States on May 5, 2026
★★★★★ 4
Comfortable but smaller than a standard pillow.
Size: Standard (Medium)
The pillow is bit smaller than standard length wise. It takes a while for the smell to go away. Very comfortable pillow.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Remarkable and impressive pillow
Size: Standard (Medium)
The pillow came quickly and was what was expected. After 6 months of chronic neck pain, one night on this pillow has made a world of difference. Please buy one of these if you are on the fence. They are wonderful. Highly recommend.
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Reviewed in the United States on April 14, 2026