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Description
Ronstan Series 75 Top Block for RF72700 Twinspeed SystemProduct Description Ronstan Series 75 Top Block for RF72700 Twinspeed System 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 19. 8 oz. Product Information Two speed mainsheet systems allow both coarse and fine
Product Description
Ronstan Series 75 Top Block for RF72700 Twinspeed System
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 - 19.8 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.
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.
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
4.6 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Strong tug toy!
Pattern Name: Tug Pull, Size: Large
Great tug toy for our crazy chewer! Quite a few good play sessions and no tooth marks!! The material is great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
KONG Tug Toy
This tug toy is decent but not amazing. It’s sturdy enough for light play, but it doesn’t hold up as well as other KONG toys we’ve used. My dog enjoyed it, but the material started to wear faster than expected, and it didn’t feel as durable as the usual KONG quality. It’s fine for occasional tug sessions, but not the best choice for strong pullers or heavy chewers.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Best toy for a puppy who loves tug-o-war
My puppy (lab/shepherd) went nuts for this toy. She loves to play tug-o-war. This is so durable and the grip handles on the end totally help you out. She loves to bit in the middle and will whip it at you to get you to engage with her. The size is perfect for her and the KONG material must feel good for her.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
GREAT DOG TOY INDESTRUCTIBLE!
Best dog toy yet! My large breed year old pup is very hard on toys and this one stands up to the wild playing and chewing! Excellent purchase I’ll definitely buy it again to have extras around and I’d definitely give it as a gift! Happy dog happy life!
GREAT PRODUCT
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Reviewed in the United States on January 23, 2026
★★★★★ 1
Kong didn't survive this guy.
He had it for an hour.. We played tug for around 10 minutes then he took it off and chewed it up.. I thought Kongs were tougher to chew up.. very dissapointed.
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Reviewed in the United States on May 25, 2026