Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171

Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171

Marsoni

M251S

$46.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171Series 40 Ball Bearing Block Single Upright Lead Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Applications: Typically used for halyards at the mast base. Materials: Acetal ball

Easy Shipping

Quick Dispatch:

Your Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171 orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171 ships.

Need Help?
Questions about Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Ronstan Series 40 Ball Bearing Block - Single Upright Lead - RF40171 in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

I got these I ran them through the laundry. They didn't seem to bleed at all. I like short sleeve because when I put a long sleeve on under a shirt the sleeves bunch up behind my elbow and I have a hard time pulling the inner sleeve forward. My only complaint is there is no neck tag to indicate which side is front and which is the back of the shirt.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 30, 2026

Verified Purchase

Tony Sukiennik

Phoenix, US

★★★★★ 5

Keeps the Sun off my Neck comfortably

Color: Black, Army Green, Light Gray, Size: Large

I go out often in the heat buy must be careful about Sun exposure... These shirts are comfortable even I'm extreme heat and I like that the fabric has stretched... Comfortable to wear even in extreme heat...

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 7, 2025