SKU: 17618617170

Ronstan Series 25 Ball Bearing Orbit Block - Becket Swivel Shackle [RF28100]

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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

Ronstan Series 25 Ball Bearing Orbit Block - Becket Swivel Shackle [RF28100]Series 25 Ball Bearing Orbit Block Becket & Swivel Shackle Single sheave ball bearing block with becket hub and swivel shackle head. Series 25 Ball Bearing Orbit Blocks, delivering superior strength, reduced weight, and exceptional performance for high demand dinghy and small boat applications. Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength to weight

Series 25 Ball Bearing Orbit Block™ - Becket & Swivel Shackle

Single sheave ball bearing block with becket hub and swivel shackle head. 

Series 25 Ball Bearing Orbit Blocks™, delivering superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.

Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high compression strength acetal bearing system, the Series 25 BB Orbit Blocks™ are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 meters.

Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.

Features:

  • 2-stage ball bearing system.
  • Suits up to 8mm (5/16”) lines.
  • Hollow hub for becket take-off.
  • Lashing blocks suit up to 4mm (5/32”) lashing.

Specifications:

  • Max. Rope diameter (in): 5/16
  • M.W.L. (lb): 500
  • Sheave diameter (in): 1
  • B.L. (lb): 990
  • Weight (oz): 0.6

Applications:

  • Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft).
  • Control lines.
  • Cascading vangs.
  • Leech lines & cunninghams.

Materials:

  • Frame/cheeks: Toughened, glass fibre reinforced nylon.  
  • BB Sheave and balls: high compression strength acetal.
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: 17618617170

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4.6 ★★★★★
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REGINA
Draper, US
★★★★★ 5
Works great
Color: Space Gray, Memory Storage Capacity: 32 GB, Size: Wi-Fi
Nice. Great condition. Battery lasts. Came packaged well. Glad I purchased.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
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Verified Purchase
T'Quanda
Lake Worth, US
★★★★★ 4
Reliable everyday iPad with smooth performance but limited storage sadly
Color: Silver, Memory Storage Capacity: 32 GB, Size: Wi-Fi, Color: Silver, Memory Storage Capacity: 32 GB, Size: Wi-Fi
The Apple 7th Generation iPad has been a very reliable device for everyday use. It runs smoothly when browsing, streaming videos, using social media, and handling basic apps without lag. The 10.2-inch screen is a great size big enough for comfort but still easy to carry around. The display is clear and bright, and the battery life holds up well for daily use. Setup was quick and simple, and it connects easily to Wi-Fi and Bluetooth accessories. The main downside is the 32GB storage. It fills up very fast, especially with apps, updates, and photos, so it works best if you rely on cloud storage or don’t download a lot. Overall, this is a solid and dependable iPad for students, casual users, or anyone who needs a simple IPAD for everyday tasks, Also I’ve had this iPad for about 3 months now… still in great condition Update : I’ll have to remove a star since the iPad dies very fast out of nowhere unfortunately :(
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Reviewed in the United States on May 22, 2026
G
Verified Purchase
Grant In Austin
Houston, US
★★★★★ 5
Great quality at a remarkable price
Color: Navy Blue
I got an iPad and was looking for a cover to protect it. I came across this case that has a Bluetooth keyboard. It seems to be working great. It was less than $30 and had 4.5 stars with over 4k reviews. The keyboard is magnetic and detachable, so I’ve got lots of configuration options. The keyboard pairs easily and allows you to use the iPad like a laptop. The point of an iPad a lot in one shot is kind of the touchscreen, but when I’m typing a lot of text as once (like now), it’s really nice to have a physical keyboard and touchpad. The keys are comfortably spaced and I’m comfortable typing on it. There is no additional setup for the keyboard besides pairing it to the iPad. At that point, all the cursor and keyboard features are immediately available. The case is well built and has nice features like a slot to hold a stylus and multiple grooves to set your viewing angle. It’s configured to be used in landscape mode, but if for some reason you wanted to use it in portrait mode, you can pop the keyboard off to lay it flat. Especially for the price, this is an exceptionally nice iPad cover.
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Reviewed in the United States on May 8, 2026
M
Verified Purchase
MAAC
Grantham, US
★★★★★ 5
💪🏼💪🏼🇺🇸🇺🇸🇺🇸
Color: Navy Blue
⭐️⭐️⭐️⭐️⭐️ Very high-quality product, ideal for all types of heavy-duty work. It feels strong, comfortable, and durable. It performs its function perfectly and exceeds expectations. I highly recommend it for its excellent performance and great value for the pr
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Reviewed in the United States on May 10, 2026
Y
Verified Purchase
Yesman
Birmingham, US
★★★★★ 5
LOVEEEE thiss case
Color: Navy Blue
Writing review with the case love this case a lot! Very fun to use great model for the case it’s like closing a secret notebook,super cool! Love that the keyboard has diffrent colors and light eating as well great for work or school.
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Reviewed in the United States on April 20, 2026

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