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Description
Ronstan Series 75 Top Blocks for RF72900 Twinspeed SystemProduct Description Ronstan Series 75 Top Blocks for RF72900 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. 2430 lb. B. L. 5070 lb. Weight 20. 3 oz. Product Information Two speed mainsheet systems allow both coarse and fine
Product Description
Ronstan Series 75 Top Blocks for RF72900 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. - 2430 lb.
B. L. - 5070 lb.
Weight - 20.3 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 keel boats 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
4.9 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Great mineral sunscreen that actually works
Size: 5 Fl Oz (Pack of 1), Set name: Tube - 5 oz.
Blue Lizard Sensitive Mineral SPF 50 has become my daily go-to. It goes on smooth, doesn’t leave a weird white cast like some mineral sunscreens, and gives solid protection. I like that it’s 100% mineral with no harsh chemicals and has organic aloe vera in it, so my skin feels hydrated instead of dried out. No greasy feeling, no strong scent, and it holds up well even when I sweat a bit. Been using it for a few weeks now and it performs exactly how I want. Small bottle but a little goes a long way. Definitely recommend if you want a simple, effective mineral option.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Fabulous product! Made my skin feel soft!
Size: 5 Fl Oz (Pack of 1), Set name: Tube - 5 oz.
This product goes on smooth and a little goes a long way. I used it today for the first time and was very pleased that it held up to my sweating in the heat doing farm work! It doesn’t bother my very sensitive skin, in fact it is quite soothing. A little goes a long way. With about a quarter size amount I was able to do both arms and my face. I was outside for several hours and didn’t burn like I usually do. It is basically unscented which is nice and isn’t sticky.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 4
Works well and neutral scent. Has white cast.
Size: 3 Fl Oz (Pack of 1), Set name: Tube - 3 oz.
Not a bad sunscreen. I wore it yesterday at a water park, reapplied every 1-2 hours, and didn’t get burned. Works well as a sunscreen and has a very neutral scent, which I appreciate a lot. However, like most mineral sunscreens it feels a bit heavy and definitely has a white cast. I’m pretty pale and still had a hard time getting it to blend in. It’s priced well, available at many super markets, offers good protection, and the neutral scent means I will continue using it (I stopped using some other sunblocks because of the scent alone). Just know it feels heavy and has a white cast.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Favorite Mineral Sunscreen
Size: 5 Fl Oz (Pack of 1), Set name: Tube - 5 oz.
This is my go to mineral sunscreen. It's very effective at protecting your skin from the harsh UV rays. It great to use for any water based activities, since it stays on your skin regardless of how wet it gets. I'm also able to use it under my eyes without it irritating them. Though it does leave behind a white cast after applying, but I personally don't mind it.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
My favorite mineral sunscreen for Hawaii
Size: 3 Fl Oz (Pack of 1), Set name: Tube - 3 oz.
My favorite mineral sunscreen for Hawaii. I just got back from a week in Maui. I took 3 different brands of mineral sunscreen. For Maui it has to say mineral to be allowed. Of the 3 the Blue Lizard was our favorite. It went on white but rubbed in the quickest. We applied in our room before going out for several hours and never got a burn the entire week. I only reapplied once on a hike. Would recommend Blue Lizard!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
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