Ronstan Series 50 All Purpose Block - Single Upright Lead - RF51171

Ronstan Series 50 All Purpose Block - Single Upright Lead - RF51171

Marsoni

M251S

$44.99

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

Ronstan Series 50 All Purpose Block - Single Upright Lead - RF51171Series 50 All Purpose Block Single Upright Lead Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Ideal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire Applications: Typically used for halyards at the mast base. Materials: UV stabilized acetal sheave Grade 316 stainless steel load housing

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We offer a 30-day return/exchange service after receiving.
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This was horribly made and a nightmare to put together. You have to basically bend the bars to get the coverings attached. The sizes don't match. The stickers that label the parts are impossible to remove and if you do get them off theres a lot of residue left behind. On top of that once it was put together I noticed theres a big dirty foot print on it which is definitely not mine.

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Reviewed in the United States on January 5, 2026

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Duckie mom

Massapequa, US

★★★★★ 3

You have to add weight to it

Color: Coal Black

It does its job and it was easy to put together but it's a little on the flimsy side and it will easily be knocked down. So you're going to have to figure out a way to make the legs heavier? I used cinder blocks, single cinder blocks and it works just fine. Just know that it will knock over super easy

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Reviewed in the United States on January 22, 2026

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Oneida P

Chelsea, US

★★★★★ 5

The snap to put them together.

Color: Coal Black

This came in handy in the foyer. I didn’t want to see the door from my couch. I must be weak found it hard to snap them together. I kept 2 my daughter took the other 2.

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Reviewed in the United States on May 19, 2026

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Jennifer Cal

Houston, US

★★★★★ 5

I have 2!

Color: Coal Black

My office is in my loft. But there are things along the wall I don’t want to look at. These work great. Hides what I don’t want to see & is a classy look in the room. Sturdy, easy to assemble, well made.

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Reviewed in the United States on May 31, 2026

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Lisa Ryan

Belleville, US

★★★★★ 5

Great product

Color: Black, Size: 4 Panel-88''

Literally exactly what I was needing

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Reviewed in the United States on May 1, 2026