SKU: 17618617170

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

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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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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 ★★★★★
Based on 19 reviews
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emily j ginter
Omaha, US
★★★★★ 5
Quick drying, non sticky lotion!
Color: Medium Glow
Great even color and dries immediately. This formula is not sticky at all. The color may not be as dark as the gel or foam, but is very natural.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
S
Verified Purchase
Shayna Rollins
Birmingham, US
★★★★★ 5
Unbeatable Value for the Price!!
I’m so impressed with the packaging of this kit! It came with the cutest little bag, perfect for the pool or beach. The product sizes are much larger than I expected, and the mitt is excellent quality. I haven’t tried everything yet, but I’m really excited to. For the price, this kit is a fantastic value considering how much you get! One small note: the “Gimme the Glow Down” spray could’ve been filled a bit more (see photo). I did test a quick spritz on my face, it felt refreshing, but did have that classic self-tanner scent and left a slight sticky residue. Nothing major, though. I’ll update once I see the full results on other products! UPDATE: I LOVE THESE PRODUCTS! The tan is so even and gives a great glow to my skin. I wash my face twice a day so I use the glow down spray to refresh the tan. I used this self tanner for my engagement photos and it looked like I just came from the beach! (See last photo)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2025
B
Verified Purchase
Beth Gumtow
Houston, US
★★★★★ 3
Dark coloring but very streaky and stains easily.
Color: Medium Glow
While it does darken the skin one has to be VERY careful when putting it on. It does stain and it is very streaky and it does stink after wearing it a while so the smell is rather yucky and they advertise that it is not. I had streaks everywhere and unevenness so I ended up ordering a glove to apply it with hoping that will do a better job. I have not tried it yet but am probably going to return one of the 2 bottles I received and hope for a partial refund.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
K
Verified Purchase
Kaylee
Massapequa, US
★★★★★ 1
Horrible
Color: Medium Glow, Color: Medium Glow
Horrible. Save your money. I like the mousses, but this is awful. Streaky and orange. Splotchy. So bad
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Reviewed in the United States on June 1, 2026
N
Verified Purchase
Noelle
Louisville, US
★★★★★ 5
Helped Tighten My Skin & Minimize Pores
Color: Cyano Pink Spicule, Color: Cyano Pink Spicule
I’ve loved the Dr. Melaxin Cyano Pink Spicule Serum! The bottle is small, but it lasted me around 6 months since I only use one pump every other night. When I first started using it, I noticed a tingling sensation, but over time my skin adjusted and I barely notice it now. I’ve definitely seen my pores appear smaller and my skin feels tighter and smoother after using it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

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