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Description
Ronstan 60mm Single Core BlockProduct Description Ronstan 60mm Single Core Block Features Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Durable aluminum alloy cheek plates Central hub hole can be used as a becket take off or tie up point Universal head with full 3 axis articulation Shackle head lockable at 0 or 90 degrees Alloy Rope Wire sheave version also
Product Description
Ronstan 60mm Single Core Block
Features
Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less than half the friction of the nearest competitor
Durable aluminum alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Universal head with full 3-axis articulation
Shackle head lockable at 0 or 90 degrees
Alloy Rope/Wire sheave version also available
Measurements
Sheave Ø - 2 3/8 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Pin Ø - 1/4 in.
M.W.L. - 2200 lb.
B. L. - 4410 lb.
Weight - 8.3 oz.
Product Information
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 optimization and the cut-away design minimizes 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, minimizing 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.
Applications
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12m (40ft).
Various control line applications on larger yachts.
Alloy sheave models are available for use with wire.
Materials
Sheave: U.V. stabilized Acetal or anodized aluminum (AW models)
Cheek plates: Aluminum alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, post & hub: Grade 316 stainless steel
Features
Measurements
Sheave Ø - 2 3/8 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Pin Ø - 1/4 in.
M.W.L. - 2200 lb.
B. L. - 4410 lb.
Weight - 8.3 oz.
Product Information
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 optimization and the cut-away design minimizes 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, minimizing 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.
Applications
Materials
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
4.2 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 4
Good glitter, Pump problems
Color: White, Size: 3.72 fl oz
Worked fine for me, but other people I know who all bought it for a color guard show had the pump get clogged and couldn’t spray it anymore
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2025
★★★★★ 5
Worth buying!!
Color: White, Size: 3.72 fl oz
Does have alot of glitter and stays on. Love ❤️ it!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 5
Light mist glitter
Color: White, Size: 3.72 fl oz
Love this so much!
Its a light mist with a perfect glitter glow that washes off easily and doesn't get all over the place when applying!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 2
Sprayer broke second use
Color: White, Size: 3.72 fl oz
Beautiful but the sprayer stopped working after second application. No matter what I do to try to fix, it won’t. So now I can’t use it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
★★★★★ 5
Love it
Color: White, Size: 3.72 fl oz
Love so sparkly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026