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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan Series 40 Rta Orbit Block Auto Single Swivel HeadSeries 40 Ratchet Orbit Block Single Auto Swivel Shackle Head Automatic Ratchet With Automatic Models, 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. Awesome Ratchet Block Holding Power Quite Simply, Ronstan Ratchet Orbit Blocks Have The Highest Holding Power Available. The Sophisticated Nc
Series 40 Ratchet Orbit Block - Single - Auto - Swivel Shackle HeadAutomatic Ratchet
With Automatic Models, 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.
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 Sheave Cross-Hole Geometry. The Series 40 Delivers Up To 14:1 Holding Power, Almost Double That Of Our Nearest Competititor.
The Unique Sheave Design Has 8 Gripping Faces Which Directly Resist Loaded Line Movement. Traditional Designs Have An Angled Resistance To Line Movement. Our Generation 2 Design Has Straight Resistance Faces Which Both Distribute The Load And Minimise Rope Wear. These Faces Are Offset From The Radial Line, To Draw The Rope Down Into The Gripping Area When Under Load.
Simple And Secure Attachment
The Dyneema&Reg; Link Is Easily Fitted And Is Retained Securely By A Moulded Retainer Clip. The Flexible Link Can Be Left With One End Attached To The Block When Fitting - No More Lost Shackle Pins.
The System Is Compatible With Dyneema&Reg;/Spectra&Reg; Strops, Webbing And Carbon Connection Points - Much More So Than Steel Loop Tops Or Shackles.
Smooth Easing Of Sheets
With Auto Models The Sheet Runs Out Smoothly And Freely As Soon As The Ratchet Mechanism Disengages.
Low Profile Stand-Up Kit Allows 0 Or 90 Alignment
Stand-Up Kits Feature A Clatter-Free Rubber Boot. You Can Attach The Dyneema&Reg; Link So That The Block Is Aligned With The Stand-Up Base Or Across It. It'S A Neat Low-Profile Solution Which Allows Full Articulation.
Features:
- Up To 14:1 Holding Power - Highest Available!
- Smooth Easing Of Sheets
- Fully Automatic Load Sensing Ratchet Engagemen
- Swivel Shackle Head For Unlmited Block Rotation
- Stainless Steel Shackle Head For Ultimate Durability And Compatibility With Harsh Fixing Points
Applications:
- Dinghy Mainsheet Systems
- Mainsheet Fine Tune Systems On Sportsboats & Small Keel Boats
- Mainsheet Systems On Sportsboats Using Rf7 Mainsheet Swivel Cleat Unit
- Spinnaker And Job Sheets On Dinghies - Especially Modern Asymmetric Classes
- Control Line Applications On Larger Yachts
Materials:
- Sheave: Hard Anodised 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&Reg;
Specifications:
Sheave Ø:40Mm(1-9/16')
Max. Rope Ø: 9Mm(5/16')
M.W.L.:175Kg(385Lbs)
B. L.:500Kg(1,100Lbs)
Weight:44G(1.5Oz)
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 14 reviews
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Product Reviews
★★★★★ 1
Don’t buy
Size: Eufy E25 Omni / E28 Omni E28
Black roller brush doesn’t fit. Quality is not the same as eufy. The filter doesn’t have as many pleats ergo doesn’t filter as well.
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Perfect Fit for Eufy E25 - Great Way to Refresh Your Vacuum
Size: Eufy E25 Omni / E28 Omni E28
This replacement kit worked perfectly with my Eufy E25 robot vacuum/mop. All of the parts fit as expected, and it was nice to be able to swap everything out at once rather than replacing pieces individually.
After installing the new brush, mop, filters, and other components, my machine is running noticeably better. Super easy to do.
The set includes a good assortment of replacement parts, making it a convenient way to refresh your vacuum and keep it working efficiently.
A great value and an easy way to extend the life and performance of your robot vacuum.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Complete Replacement Set
Size: Eufy E25 Omni / E28 Omni E28
This replacement parts kit is a convenient way to keep a compatible robot vacuum running efficiently without having to source each component separately. The included rolling brush and side brushes help maintain strong cleaning performance by picking up debris effectively, while the filters support proper airflow and dust capture. The dust bags are a useful addition for keeping the self emptying system working smoothly over time. The roller mop also fits well and helps maintain the mopping function without needing frequent replacements. Having a full set like this makes routine maintenance much easier and helps extend the overall lifespan of the vacuum.
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Reviewed in the United States on April 22, 2026
★★★★★ 2
Mop won’t lock and black roller won’t fit
Size: Eufy E25 Omni / E28 Omni E28, Size: Eufy E25 Omni / E28 Omni E28
We’ve had our E28 for about a year now, so it was time to change out some of the more worn parts. This kit looked to have everything I wanted to swap out. It came with two sets of sweeper brushes, two center brushes, the roller mop brush, two dust bin filters and several disposable dust bags.
I was able to get all of the parts to fit on our E28 except the black side main brush. It looks like the diameter of the hole isn’t correct for the model, but the grey side was (see photos and video comparing this set to factory set). The roller mop looked very similar except it had a slightly less high pile. The pieces all seemed good quality over all. Putting the new parts on was easy otherwise and they fit well.
I sent out our E28 for a whole house cleaning and it did well both vacuuming and mopping, or at least on-par with the factory parts with the same noise level. The aim issue was that the roller mop wasn’t locking in place, and when it went to try to wash the mop and popped the whole vacuum out of its base cradle and threw an error a couple times throughout the cleaning. I just had to manually push the roller mop back in and it worked fine until the last wash and then I couldn’t get it to stop throwing the error. So, 2/5 stars for the one piece not fitting and the roller mop having issues during the mop washing process. Guess I’ll have to order from Eufy directly.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Direct replacment for omni E28!
Size: Eufy E25 Omni / E28 Omni E28, Size: Eufy E25 Omni / E28 Omni E28
This kit is an excellent value and contains direct replacement parts for the Eufy E28 Omni. Everything in the box from the rolling brush and the roller mop to the filters and dust bags matches the original components perfectly in size and fit.
I found that the side brushes and the main roller installed easily without any forcing, and the vacuum performance remained consistent with no loss of suction or strange noises. The HEPA filters fit snugly in the housing, and the dust bags slide right into the docking station just like the brand-name ones. It is much more cost-effective to get this entire bundle than to buy these items individually. If you need to refresh your E28 Omni, this set is a reliable way to get it back to peak performance.
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Reviewed in the United States on January 22, 2026
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