Ronstan Series 20 Ball Bearing Block - Upright Lead - RF20171

Ronstan Series 20 Ball Bearing Block - Upright Lead - RF20171

Marsoni

M251S

$20.99

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

Ronstan Series 20 Ball Bearing Block - Upright Lead - RF20171Series 20 Ball Bearing Block Upright Lead Features: 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 stainless steel or Torlon ball bearings provide high performance & low friction Applications: Typically used for halyards at the mast base Materials: U. V. Stabilized Acetal sheaves Stainless steel ball bearings & Load housing Specifications:

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I have only used two patches so far, and they have worked just fine, You do have to have some tools like a buffing wheel and the vulcanizing glue and a roller wheel to make these patches work as they should, but I am happy with these patches, especially since nobody will repair a motorcycle tire, so this is Your only way to fix them.

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Reviewed in the United States on September 24, 2025

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Ruben vasquez

Lake Worth, US

★★★★★ 5

Patches

Size: 0.35 x 2.36 Inch

Good product

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Reviewed in the United States on March 10, 2026

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Judy

Belleville, US

★★★★★ 5

Good quality

Size: 50-Foot, Style: 90° Locking End

Good quality and has that special little notch that allows it to fit into my receptacle easily. It. It has a nice long, reach 100 feet.

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Reviewed in the United States on May 20, 2026

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Andrew Weinberg

Omaha, US

★★★★★ 5

Works great and fits well

Size: 50-Foot, Style: 90° Locking End

No issues. Not sure why people people.cmaim it doesn't seat...its does.and works great. Im in a desert environment in Nevada and it is putting up with the heat well.

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Reviewed in the United States on June 8, 2026

Verified Purchase

Evelyn Stapelton

Louisville, US

★★★★★ 5

It works well

Size: 25-Foot, Style: 90° Locking End

This is a great product

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Reviewed in the United States on May 31, 2026