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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My small destroyer dogs LOVE these toys and are always surprised to find another toy after the first and second violent de-stuffing. Definitely a supervision toy for safety, but my terriers love doing their thing when these come out and they last much longer than I had anticipated. Color, design and value all as described, however I literally do not remember if it did squeak because the squeaker would be the first thing gone

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Reviewed in the United States on March 25, 2026

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Catherine Burns

Grantham, US

★★★★★ 1

Doesn’t hold up at all.

Color: Hare - Large, Color: Hare - Large

Received this today, and it lasted less than an hour before it had to be taken away to prevent it being eaten.

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Reviewed in the United States on May 11, 2026

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nails44

Pawtucket, US

★★★★★ 5

It looks like a Totoro

Color: Hare - Large

Great toy ! Pibble loves it! an it looks just like a Totoro which is huge plus at our house. These are very durable and once de gloved the body will last a very long time if your dog isn’t a big chewer.

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Reviewed in the United States on December 29, 2025

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Chelsea

Phoenix, US

★★★★★ 5

Very fun toy at a great price

Color: Monsieur Acorn - Large

My dog (an American Staffordshire Terrier) lovessss to chew and destroy things! We have literally gotten three of these because she loves them so much, and they last, too!! You get the first toy, which my dog rips open. I’m not sure exactly how long it takes for her to destroy it, maybe a few days to a week. Then another little toy (with a sad face lol) is revealed. She highly enjoys this one, as well! Finally, she rips the fabric off that and then a blue, spiky ball is revealed. She lovesss to chew on it and I think the bumps are a nice texture for her mouth. She is quite a strong chewer and the ball lasts a long time!! No toy lasts forever and I have found under dog toys are quite expensive and that’s no guarantee of how long it will actually last. But I am perfectly fine with spending ~$11 every once in a while for these toys because I know she loves them, and they are not immediately destroyed.

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Reviewed in the United States on July 25, 2020

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malysway

Fort Morgan, US

★★★★★ 5

Would happily purchase again.

Color: Hedgehog

My powerchewer of a dog destroys plushies in 10 minutes and most other 'tough chew' toys don't last more than a day or two - at most. But he loves his hedgehog and hasn't managed to destroy it! Sure, it has a plethora of teeth marks, but it's in one piece and he hasn't managed to bite off any chunks (I was worried about the hedgies nose 😂). It stands up to his teeth and allows him to satisfy his need to gnaw & chew, safely.

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Reviewed in the United States on March 23, 2026