SKU: 94170786853

Ronstan Series 60 Core Block - Single - Becket

Sale price$138.47 Regular price$153.85
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Ronstan Series 60 Core Block - Single - BecketSeries 60 Core Block Single Becket Core Blocks are a true all round solution. A tuned 2 stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and

Series 60 Core Block - Single - Becket

Core Blocks are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.

Universal Bearing
Dynamic and high static load performance

The Ronstan Universal Bearing incorporates our proven 2-stage bearing system

Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.

Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.

Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.

Alloy Cheek Plates
Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.

Universal head
The head assembly incorporates a brass bearing washer to provide smooth 360 rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0 or 90.

Shackles are high quality forged grade 316 stainless steel.

Features:


  • Class leading performance and sleek, contemporary styling


  • Excellent dynamic and high static load performance


  • Less than half the friction of the nearest competitor


  • Universal head with full 3-axis articulation


  • Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key


  • Central hub hole can be used as a becket take-off or tie-up point



Applications:

  • Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12M (40')


  • Various control line applications on larger yachts



Materials:

  • Sheave: U.V. stabilized Acetal


  • Cheek body: Aluminium Alloy


  • Ball Bearings: High compression strength carbon black Acetal


  • Shackle, head post : 60mm(2-3/8")
    Max. Rope : 12mm(1/2")
    Pin : 6mm(1/4")
    M.W.L.: 1,000kg(2,200lbs)
    B. L.: 2,000kg(4,410lbs)
    Weight: 275g(9.7oz)

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: 94170786853

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4.6 ★★★★★
Based on 11 reviews
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Steve_T_USA
Battle Creek, US
★★★★★ 5
Comfortable, warm enough. Feels a bit like a shawl but looks like a good sweater.
I like the color and the fit is good, roomy, feels a bit like a shawl but holds shape and hides a few extra pounds. The zipper is thin but whether you'll find it good enough to last I wouldn't know yet. I'm keeping this.
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Reviewed in the United States on January 20, 2026
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Neodymium Bean
Natrona Heights, US
★★★★★ 3
Comfortable, well put together, nice material, size chart is way off.
Color: Black, Size: 3X-Large
A well put together sweater that is made with very soft yarn, and doesn't seem to have any major structural issues. The zipper works great and the stitching looks like there's not major flaws. The only big issue is the 3XL sweater I got is way off size wise. Oversized sweaters are great, so I was excited about getting this for me to use for day to day wear, and my wife (who is a lot smaller than me) to steal when she's watching tv on the couch or sitting outside, so the disappointment was palatable. Sadly the 3XL size is about the same size as XL sweaters in the closet, where as a few 2xl sweaters we recently ordered from another company are a lot larger than this one. Outside of the major size discrepancy, which could be a major deal breaker for some, the sweater itself is really comfy and really nice. Sadly 3XL is the largest size we could get on the chart.
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Reviewed in the United States on January 7, 2024
T
Verified Purchase
TSmith
San Leandro, US
★★★★★ 5
Well made for the money.
Beautiful, and well made front zipper sweater. I purchased 7 for Christmas and the men in my family loved the soft feel of the fabric. They were true to size..
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Reviewed in the United States on January 5, 2026
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Nancy
Dallas, US
★★★★★ 5
Very good quality heavy knit
Color: Blue, Size: Medium
Very nicely made and good quality. Heavy knit. Much nicer than I expected for the price. Size is true to fit.
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Reviewed in the United States on January 12, 2026
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Alice Garza
Boise, US
★★★★★ 5
Very stylish
Color: Khaki, Size: Medium
My husband doesn’t like wearing pullover sweaters because he gets hot after being inside for awhile. This sweater jacket was perfect. It’s stylish and well made. Very comfortable and great price. When I gave him the pkg and reminded me he didn’t like sweaters inside. When he opened it and was pleasantly surprised. Finally he could wear a sweater that was easy to put on and take off. He loved everything about it. I bought more colors and he wears every one of them. Great sweater!
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Reviewed in the United States on February 2, 2026

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