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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan Series 15 Ball Bearing Utility Block - Upright Lead BlockSeries 15 Ball Bearing Utility Block Upright Lead Block Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV
Series 15 Ball Bearing Utility Block - Upright Lead Block
Features:
- Smallest and lightest ball bearing block available
- Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction
- Single loop head blocks include an O-ring to separate running line from head lashing or fixing
Applications:
- Dinghy control lines
- Vangs, cunninghams and tweakers
- Shock cord tensioning systems
Materials:
- BB sheaves: UV stabilized acetal
- Ball bearings: Stainless steel
- Cheeks: Grade 316 stainless steel
Manufacturer Part Numbers: RF15171
GRP:WRO
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
4.2 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Very versatile and easy to install too!
Size: 5.5 INCH
Very sturdy ! Worked perfect for our outdoor location and is holding the trellis to our home... WONDERFUL Support !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2025
★★★★★ 5
Great Quality
Size: 9.25 INCH
Why did you pick this product vs others?:
Looked sturdy and was a great price for heavy duty brackets
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
★★★★★ 5
Ignore the “Frequently returned item” message!
Color: Walnut Color, Color: Walnut Color
I usually don’t write reviews but I thought I should for these shelves. I was a little skeptical on these based on the “Frequently returned item” message but I decided to give them a shot and I’m glad I did! These shelves are solid and well made, beautiful color, fit perfectly in the corner of my wall, and are easy to hang. I’m not sure why they are frequently returned but I will be ordering another set for my wife’s side of the room.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Nice Shelves
Color: Acacia
Nice looking shelves and installed very easily.
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Reviewed in the United States on April 7, 2026
★★★★★ 4
Good looking, quality control needs improvement
Color: Acacia
The shelves are fine but one of the mounting blocks was glued on backwards which meant the holes for countersinking the mounting screwed ended up on the wrong side. It was easy to drill new countersinks so no big deal but a star is docked for quality control. They are cheap and looks good so I can't complain much.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
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