Model Expo - 5/32" (4mm) Walnut Double Sheave Block 150 pcs

Marsoni

M251S

$25.00

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

Model Expo - 5/32" (4mm) Walnut Double Sheave Block 150 pcsModel Shipways Double Sheave Block, Walnut 5 32" (4mm) 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

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If your dog pulls on these (and why wouldn’t he?), the rope immediately comes out. Turns out they just fuse the ends of the nylon rope together, which is no match for a dog playing tug. Any dog, any level of pulling will dismantle these. We’ve managed to reinsert the rope to a couple of these and KNOT it, which gives you a shorter rope but a toy that can withstand some play. But if I had wanted a DIY toy, I’d have used the balls and rope I already own.

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Reviewed in the United States on December 11, 2025