Pay in installments of $22.76 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan 45mm Single/Swivel Halyard Core BlockProduct Description Ronstan 45mm Single Swivel Halyard Core Block Features: High dynamic and static load capacity Efficient 2 stage bearing system Ball bearings to counteract side thrust loads Class leading performance and sleek, contemporary styling Durable aluminum alloy cheek plates Central hub hole can be used as a becket take off or tie up point Measurements Sheave 1 3 4 in. (45mm) Max. Rope 1 2 in. (12mm) Max. Cable in (mm) Pin 3 16 in. (5mm) M.
Product Description
Ronstan 45mm Single/Swivel Halyard Core Block
Features:
High dynamic and static load capacity
Efficient 2-stage bearing system
Ball bearings to counteract side thrust loads
Class leading performance and sleek, contemporary styling
Durable aluminum alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Measurements
Sheave Ø - 1 3/4 in. (45mm)
Max. Rope Ø - 1/2 in. (12mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/16 in. (5mm)
M.W.L. - 1540 lb. (700kg)
B. L. - 3090 lb. (1400kg)
Weight - 4.2 oz. (121g)
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 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.
Applications
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 10m (33ft).
Various control line applications on larger yachts.
Alloy sheave models are available for use with wire.
Materials
Sheave: U.V. stabilized Acetal
Cheek body: Aluminum Alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, head post & hub: Grade 316 stainless steel
Features:
Measurements
Sheave Ø - 1 3/4 in. (45mm)
Max. Rope Ø - 1/2 in. (12mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/16 in. (5mm)
M.W.L. - 1540 lb. (700kg)
B. L. - 3090 lb. (1400kg)
Weight - 4.2 oz. (121g)
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 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.
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
4.8 ★★★★★
Based on 17 reviews
Sort
Product Reviews
★★★★★ 5
Excellent!
Size: 12, Color: Black/White
These men’s Lacoste sneakers are excellent! The quality is top-notch, and the leather is very soft and feels premium. Overall, Lacoste is a great brand with consistently good quality. The sneakers are very comfortable to wear, although they do run slightly small, so sizing up may be a good idea. The price was also better than in-store, which made this purchase an even better deal. Overall, I’m very satisfied and happy with these sneakers
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
Good shoe
Size: 12, Color: Black/White
Sleek, shoe lightweight
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 4
Order 1 size more than what you need
Size: 9, Color: Navy/White
Awesome look.. but Wait Order 1 size extra
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Lacoste Shoes
Size: 11.5, Color: Black/White
Great quality and fit. The shoes are leather and look great. I would definitely purchase another pair without hesitation. Highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
Nice shoes
Size: 7, Color: Navy/White
Great quality shoes, looks nice. It’s little narrow but it fits me well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026