SKU: 82479163292

Ronstan Series 55 Ratchet Mount Orbit Block - Single Cleat Swivel - Auto

Sale price$154.85 Regular price$172.06
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

Ronstan Series 55 Ratchet Mount Orbit Block - Single Cleat Swivel - AutoSeries 55 Ratchet Mount Orbit Block Single Cleat Swivel Auto Features: Up to 20: 1 holding power Smooth easing of sheets High performance cleating Automatic Ratchet Block Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when

Series 55 Ratchet Mount Orbit Block - Single Cleat Swivel - Auto

Features:


  • Up to 20:1 holding power

  • Smooth easing of sheets

  • High performance cleating

Automatic Ratchet Block

Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.

* Selected Series 55 models.

Awesome ratchet block holding power

Quite simply, Ronstan Ratchet Orbit Blocks have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitor. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designs have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimize rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.

Materials:


  • Sheave: Anodized Aluminium

  • Ball Bearings: High compression strength carbon black Acetal

  • Frame/Cheeks: Toughened, glass fiber reinforced Nylon

  • Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema

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: 82479163292

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Traci King
Port Orchard, US
★★★★★ 5
stocking stuffer
Size: Regular, Color: Cream
I bought these for my girlfriend stocking stuffers. They work well and are reusable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
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BK
Belleville, US
★★★★★ 3
So So Socks
Size: Regular, Color: Cream
These are very comfortable socks. I machine washed them on a gentle cool water cycle and they ravelled. That is disappointing quality.
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Reviewed in the United States on April 29, 2026
K
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kim
West Palm Beach, US
★★★★★ 5
Wonderful for dry feet
Material Type: Black - 3 Pairs, Size: X-Large
I have been dealing with dry skin and problems with the heel of my foot, so I thought I would give these a try. I am so glad I did. They moisturize beautifully. A must is you are having trouble with your feet.
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Reviewed in the United States on May 20, 2026
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Michael S.
Whiting, US
★★★★★ 5
Heel Fisures
Material Type: Black - 3 Pairs, Size: X-Large
Fantastic product. Worked well beyond my expectations.
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Reviewed in the United States on May 20, 2026
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Nathan Tucker
Battle Creek, US
★★★★★ 4
X-Large is about a size 12-13 shoe size foot USA.
Material Type: Black - 3 Pairs, Size: X-Large
I love them they work fantastic. I am a big guy with swollen feet. Wear size 12 to 13 USA Shoes. They fit me just fine not tight. My feet felt good after wearing them for two days. Some dry skin pulled off with them and it says to wash by hand. I dont know about the durability but I am hoping to get about 5 uses per pair. Before they become unusable.
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Reviewed in the United States on February 7, 2026

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