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Description
Ronstan Series 75 Ratchet & Ball Bearing Blocks 3:1 Coarse & 6:1 FineProduct Description Ronstan Series 75 Ratchet & Ball Bearing Blocks 3: 1 Coarse & 6: 1 Fine Rope Not Included Features Coarse and and fine tuning purchase system Unrivaled 18: 1 holding power Dual sided On Off switch Low friction ball bearing system Lightweight Cheek cut outs for easy bearing maintenance Sheave 3 + 2 in. Max. Rope 3 8 in. Max. Cable in Pin in. M. W. L. 1760 lb. B. L. 3750 lb. Weight 49. 9 oz. Product Information Two speed mainsheet
Product Description
Ronstan Series 75 Ratchet & Ball Bearing Blocks 3:1 Coarse & 6:1 Fine
Rope Not Included
Features
Coarse and and fine tuning purchase system
Unrivaled 18:1 holding power
Dual sided On-Off switch
Low friction ball bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Sheave Ø - 3 + 2 in.
Max. Rope Ø - 3/8 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 1760 lb.
B. L. - 3750 lb.
Weight - 49.9 oz.
Product Information
Two-speed mainsheet systems allow both coarse and fine tuning in a single purchase system. The system allows fine tuning of the mainsheet when sailing upwind by using one of the sheet tails and keeping the other cleated. Using both the sheets at once allows the trimmer to blow off the main quickly when rounding the top mark and trim on quickly when hardening up after rounding the bottom mark. When fitting to traveler cars, ensure adequate support for the bottom block and use stand-up spring kit RF324-1 or RF324-2. (Refer to traveler section for more information).
Applications
Mainsheets on sportsboats and keel boats to 12m (40ft)
Mainsheets on sportsboats and keelboats to 12m (40')
Max. mainsail area, END boom sheeting = 38sq m (409 sq ft)
Max. mainsail area, MID boom sheeting = 23sq m (248 sq ft)
Materials
Carbon Black Acetal ball bearings
U.V. stabilized Acetal sheaves, alloy ratchet sheaves
Alloy cheeks
Torlon® ratchet pawl
Adjustable cleat arms
Features
Product Information
Two-speed mainsheet systems allow both coarse and fine tuning in a single purchase system. The system allows fine tuning of the mainsheet when sailing upwind by using one of the sheet tails and keeping the other cleated. Using both the sheets at once allows the trimmer to blow off the main quickly when rounding the top mark and trim on quickly when hardening up after rounding the bottom mark. When fitting to traveler cars, ensure adequate support for the bottom block and use stand-up spring kit RF324-1 or RF324-2. (Refer to traveler section for more information).
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
4.3 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Would buy another
Color: Olive Green, Size: XX-Large
Very lightweight and seems to be water resistant. It’s also a little bit on the longer side, which is great to cover your butt when you bend down!
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Good quality - good brand
Have bought several pieces of clothing from Maelreg. Truly great quality and good price points.
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Comfortable, Flexible, and Ideal for Mild Weather Play
Color: Cream, Size: Large
Great hoodie, exactly what I was looking for. I wanted something lightweight that I could comfortably play golf in, especially in the 50–60°F range. The material is stretchy, polyester-based, and allows for great flexibility during swings, which is a big plus on the course. It provides enough warmth without feeling heavy or overheating as you play. The sizing was spot on as well. I would definitely recommend this to anyone looking for a performance hoodie for mild, cooler golf weather.
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Reviewed in the United States on February 8, 2026
★★★★★ 3
Marginal Quality
Doesn't fit very well, baggy. Material feels cheap.
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Reviewed in the United States on March 6, 2026
★★★★★ 5
Comfy Hoodie
Size: Large, Color: Mg03- Splatter1
This brand makes some decent stuff.
This is a nice thinner hoodie with some stretchy materials and a cool splatter design.
Comfy and easy to move in/ use for active occasions or just for chillin. Very versatile.
Color doesn’t fade or hasn’t yet for me and I like the contrasting drawstrings.
Size is right on; I ordered a size up and there’s plenty of room for layering.
However if you put anything heavy in the front pocket, like a wallet, the material will give way and sag.
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Reviewed in the United States on April 19, 2026