SKU: 59772696949

Ronstan Series 30 Ball Bearing Block Single Becket Option Lashing

Sale price$98.28 Regular price$109.20
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Description

Ronstan Series 30 Ball Bearing Block Single Becket Option LashingSeries 30 Ball Bearing Block Single Becket Option Lashing Ball Bearing Blocks boast the highest strength to weight ratio available. This is achieved through all composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre reinforced composites in the block head, cleat arms and beckets. Highest

Series 30 Ball Bearing Block Single Becket Option Lashing

Ball Bearing Blocks™ boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets. 

Highest Working Load in its Class

The proven Ronstan 2-stage bearing system (Series 30 and larger) features high compression grade Acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.

The sheave and bearing system is supported by a fibre-reinforced load frame, computer modelled and optimised using advanced stress analysis methods. The Dyneema® Link, used in multi-sheave blocks, is produced from high spec SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point.

Simple, Versatile & Secure Attachment

The single block is easily lashed to an attachment point, and can also accept Dyneema® Links and shackles for a variety of efficient attachment alternatives. The Dyneema® Link used in multi-sheave blocks is easily fitted and secured by a removable pin. The Dyneema® Link can also be removed and replaced by a shackle, custom lashing or strop.

These blocks are far more compatible with Dyneema®/Spectra® lines, carbon laminate connection points and webbing than traditional blocks with steel loop tops or shackles.

Low Profile & Compact

The two way head in the single lashing block allows for alignment at 0° or 90° orientation, while the single swivel block allows for full articulation.

The flexible Dyneema® Link used in multi-sheave blocks provides 0° or 90° orientation. It connects directly to the head of the block rather than to an intermediate head post. This reduces weight and gives the lowest possible profile while allowing full articulation. Beckets have been carefully designed to minimise height.

Features:

  • Lightweight
  • Highest working load in its class
  • Secure, versatile and secure attachement
  • Low profile and compact
  • Ultra low profile thru-sheave becket
  • Self-lubricating Nylatron® sheave and full contact bearing for high dynamic loads

Applications:

  • Mainsheet systems and spinnaker sheets on dinghies to 5M(16')
  • Halyard, vang and backstay applications on boats to 5M(16')
  • Control line applications on larger yachts

Manufacturer : Ronstan
Manufacturer Part No : RF35109HL
UPC : 9316800593286
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: 59772696949

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SecurityDetail
Phoenix, US
★★★★★ 5
Great fabric & plaids! Quality construction.
Fit Type: Slim Fit, Color: Light Blue/White, Plaid, Size: X-Small, Fit Type: Slim Fit, Color: Light Blue/White, Plaid, Size: X-Small
"Light Blue White Medium Plaid" has an overall pale aqua coloring, well represented by the product photos. it's even prettier in person, with a pale purple/pink stripe and other subtle touches. 5 STARS FOR: - Fabulous 100% Cotton fabric gets better with every wash. - Thin (but sturdy) fabric, comfortable working outside in hot, humid SW Florida. - OFFERING XS SLIM-FIT: Finding this XS in a slim fit Men's shirt was a game changer for me, a slim 5'7" woman with long arms, broad shoulders and slim hips. The AE Women's version of this shirt is boxy with laughably short sleeves, and is not offered in slim fit! - Quality construction throughout. Good attention to detail, eg, matching patterns at the pocket and front placket. - FABULOUS PLAIDS, many are unique and subtly complex. - ATTRACTIVE COLOR OPTIONS, lots of different Blues. I've also enjoyed the paler (some might consider more feminine) colors like lavender, pink and pale aqua. - UNBEATABLE PRICING, ESP ON SALE. At full price, these would be a good purchase. I put my favorites into the shopping cart, and wait to be notified of sale prices. I've purchased five shirts for under $10 each, by watching for sales. PAID: $7.67 on 1/24/2026 for XS in "Light Blue White Medium Plaid".
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Reviewed in the United States on January 29, 2026
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David AL
Dallas, US
★★★★★ 5
Comfortable and well made.
A well-made, cotton shirt, suitable for casual wear. I like to wear this in the summer untucked with the sleeves rolled up over a colored t-shirt. I found the tail of the shirt to be a bit too long to wear untucked without looking odd, so I had it shortened; now it fits perfectly. It is made of cotton, so an iron is mandatory if you don’t want to look like you slept in it, and it will get some wrinkles as the day progresses, but that’s cotton’s nature. I liked it so much I purchased a second one.
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Reviewed in the United States on January 16, 2026
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BASHA
Charlottesville, US
★★★★★ 4
Nice shirt, runs a tad small.
Fit Type: Slim Fit, Color: Light Blue/Indigo, Plaid, Size: X-Large
I guess that slim-fit is not for my hubby and this is a little too fitted across his pooch belly. But he loved the blue color plaid. Fits well elsewhere. If you're not a flat-stomach, dont bother with slim-fit I guess.
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Reviewed in the United States on December 29, 2025
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TJ Stewart
Louisville, US
★★★★★ 5
worth the money
Fit Type: Slim Fit, Color: Light Blue/White, Gingham, Size: Medium
perfect fit and beautiful after 3 washes.
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Reviewed in the United States on May 1, 2026
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Amazon Momma
Pawtucket, US
★★★★★ 5
Great shirt, great price!
Fit Type: Slim Fit, Color: Navy, Tonal Floral Print, Size: Small
Bought the shirt at a steal of a price for my son. He loves it!
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Reviewed in the United States on April 16, 2026

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