Model Expo - 3/8" (10mm) Walnut Double Sheave Block 150pcs

Marsoni

M251S

$16.74

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

Model Expo - 3/8" (10mm) Walnut Double Sheave Block 150pcsModel Shipways Double Sheave Block, 13 32" (10mm) 150 pack Blocks act as pulleys used in conjunction with the miles of line that make up the running rigging. They multiply the force exerted by the crew, enabling yards and sails to propel ships 2000 tons or larger. The more parts a tackle has (rope "legs" between two blocks, determined by the number of sheaves in the blocks), the more the motivating force is multiplied, and the heavier the object which

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I've basically been exclusively buying these since I've discovered them. Super-comfortable and maintain their shape for a long time, but I've noticed from buying it multiple times that sometimes the pouch area has stiffer texture and more support than other times (when it's loose & stretchy like the rest of it). I wish I could specify receiving the more-supported ones because they tend to produce less....how to say, knocking the boys around.

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Reviewed in the United States on March 22, 2026

Verified Purchase

EclecticJay

Carnegie, US

★★★★★ 5

Comfort and softness

Size: 3X-Large, Color: Black/Navy/Dark Grey/Red

True to size; they are comfortable, good quality, and really soft.

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Reviewed in the United States on January 3, 2026