Ronstan Nylatron Sheave Box - Single Upright Lead Block - RF453

Ronstan Nylatron Sheave Box - Single Upright Lead Block - RF453

Marsoni

M251S

$27.99

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

Ronstan Nylatron Sheave Box - Single Upright Lead Block - RF453Nylatron Sheave Box Single Upright Lead Block Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. When mounted in an inverted position, are frequently used as upright leads. Features: The external tabs can be formed to fit the spar profile before fastening Applications: Typically used in dinghy spars for control lines such as outhauls Materials: Nylatron sheave Grade 316 stainless steel

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OH MAH GAWD this shirt is SO soft that I would call it slippery!! It fits PERFECTLY and true-to-size. The material is a lightweight 'satin' type feel to it that I have NEVER felt before!! Hubby just LOVES this shirt!! The color & print is just GORGEOUS with the subtle sleeve contrast at the 'cuff' (see pics)!! It is great quality with a style that will NEVER look "dated", since it is "Polo Reimagined" with the use of the slick-soft material! Given all of THAT... this is a GREAT value at this price!!

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Reviewed in the United States on January 7, 2026

Verified Purchase

Michael Kulp

Lake Worth, US

★★★★★ 5

Highly Recommended Dress Shirt

Fit Type: Regular Fit, Color: White, Size: Medium

Honestly, I Love It. Fits Great, Neck Isn't Too Tight Like Most Shirts, And It's Comfortable. It Is 100% Cotton, So Dont Forget To Iron It Before Wearing It. High Quality Dress Shirt. Highly Recommended.

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Reviewed in the United States on October 21, 2025

Verified Purchase

Jim

Boise, US

★★★★★ 5

Surprisingly good shirt for the price

Fit Type: Regular Fit, Color: White, Size: XX-Large

I’m generally pleased with my purchase. I got a 2XL because the website it would fit my neck. Around the waist it fit similar to Amazon Essentials work shirts (like mechanics use which I find comfortable). It was snug around the waist when sitting, but I can’t complain because I have a belly. I did find the neck snug when buttoning the top button so it means the neck is 18 or 18.5 and I wear a 19/19.5 to have 1-2 fingers space in the collar. The shirt is surprisingly thick like Amazon’s work shirts, much thicker than other dress shirts from another brand. And I am pleased that this shirt has button holes like other Amazon shirts does, all vertical button holes except the last one at the bottom which is horizontal. That feature keeps the shirt from unbuttoning itself during daily movement at the office. A very nice feature! I was a little disappointed in how it was packaged however but I have to press and wash it anyway.

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Reviewed in the United States on February 24, 2023

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NORBERT YOUNG

Boise, US

★★★★★ 4

Nice shirt, excellent quality, nice cloth and buttons. No pockets A+

Fit Type: Regular Fit, Color: White, Size: Large

Nice quality shirt cut a little small. The shirt kind of needs to be pressed before wearing however at this price point and quality its a buy!

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Reviewed in the United States on May 19, 2026

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