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Description
Ronstan Series 75 Ratchet and Ball Bearing Block w/ 4:1 Coarse & 8:1 FineProduct Description Ronstan Series 75 Ratchet and Ball Bearing Block w 4: 1 Coarse & 8: 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. 2430 lb. B. L. 5070 lb. Weight 53. 8 oz. Product Information Two speed mainsheet
Product Description
Ronstan Series 75 Ratchet and Ball Bearing Block w/ 4:1 Coarse & 8:1 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. - 2430 lb.
B. L. - 5070 lb.
Weight - 53.8 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 = 42sq m (452 sq ft)
Max. mainsail area, MID boom sheeting = 27sq m (290 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
4.0 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
It holds all my gear and looks fantastic!!
Color: Rustic Montana, Size: 11.5" x 8" x 2", Color: Rustic Montana, Size: 11.5" x 8" x 2"
I wanted something to hold EVERYTHING. In the pic - 2 wallets, tactical flashlight, 2 personal bluetooth speakers, 2 pairs of Beats, chap stick, pocketknife. Missing are my reading glasses but they typically will fit in there too even in their protective sleeve. This would make a great gift and the leather is excellent feel and look. This is the Extra Large size and i am happy i went with the bigger one as i almost didnt. Wife thought it was a great purchased but mad that she didnt get the chance to gift it to me for Father's Day or birthday!! LOL
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Reviewed in the United States on April 9, 2024
★★★★★ 5
Unique Jewelry Holder
Color: A White, Color: A White
Beautiful jewelry holder. Great for a gift but I brought this for myself. It arrives in 2 pieces that are easy to put together. It looks great on my dresser and helps to organize my jewelry.
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Reviewed in the United States on December 22, 2025
★★★★★ 5
Nice gift
Color: A White
It was a gift . She was pleased . Decorative.
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Reviewed in the United States on April 2, 2026
★★★★★ 4
Cute
Color: A White, Color: A White
It's super cute and goes well with the decor in my room. Comes with a leather bottom and easy to put together. Only problem is that's is a easy to fall apart as well. If one side is heavier then the other it will be lopsided. Holds necklaces okay... if you have heavy charms on them they will fall off.
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Reviewed in the United States on March 19, 2025
★★★★★ 3
Disappointing
Color: A White
The plastic was a little cheaper than I thought it would be, and the whole thing was a little smaller than I was picturing, you aren't able to rest necklaces on it because it's too short. Unfortunately I got it as a gift for someone else so I can't speak to its longevity but it was a bit disappointing.
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Reviewed in the United States on April 24, 2025