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Description
Ronstan Series 30 Single Upright Lead BlockProduct Description Ronstan Series 30 Single Upright Lead Block Features Sheave 1 3 16 in. Max. Rope 5 16 in. Max. Cable in Fastener 3 16 in. M. W. L. 660 lb. B. L. 1650 lb. Weight 1. 1 oz. Product Information 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
Product Description
Ronstan Series 30 Single Upright Lead Block
Features
Sheave Ø - 1 3/16 in.
Max. Rope Ø - 5/16 in.
Max. Cable Ø - in
Fastener Ø - 3/16 in.
M.W.L. - 660 lb.
B. L. - 1650 lb.
Weight - 1.1 oz.
Product Information
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 bearings
UV stabilized Acetal sheave
Grade 316 stainless steel load housing
Features
Sheave Ø - 1 3/16 in.
Max. Rope Ø - 5/16 in.
Max. Cable Ø - in
Fastener Ø - 3/16 in.
M.W.L. - 660 lb.
B. L. - 1650 lb.
Weight - 1.1 oz.
Product Information
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
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
4.7 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Socks
Size: Medium, Color: Beige/Cream/Green
These socks are great. Love them. Very warm too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
good but pricey
Size: X-Large, Color: White / Steel - 100
good materials, size fits, very soft and durable but is a bit expensive
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Great socks great price
Size: Large, Color: Black
Great socks
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Really snug, but not uncomfortable
Size: Large, Color: Black
I don't know why these were so much tighter than all the other UA socks I've bought over the years. Not uncomfortable, just really tight when putting them on.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great quality
Size: X-Large, Color: Black
Teenager loves these socks!
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Reviewed in the United States on May 22, 2026