These translucent silicone O-rings are 3/32" thick and measure 4" dia. Nice belts for science-project motors and even nicer for our slingshot needs. Crafters will see jewelry material that the metal-detectors won't care about.
Call it a vicious circle, this 1-3/8" dia white plastic gear with 58 teeth. Has two different input sides: (1) an 8-sprocket with a 3/16" ID, and (1) just under a 1/4" ID circle with a flat side. Teeth are approx 3/16" wide and whole shebang is approx 1" wide.
This nostalgia-prompting, zinc-plated aluminum single sheave pulley is made (and so marked) for a clothesline, which is what people dried clothes on before there were driers. If you had two of these, you could run a clothesline to the kitchen window of the tenement across the street and have something to tell your grandkids about. Measures 3-1/2" dia x 1/2" ID on a 3/4" wide x 2-1/2" bracket and comes with a 4" long x 7/8" ID J-hook for mounting outside the kitchen window.
A nice pulley just ready to be combined into the block and tackle you
need for tiny jobs, like trimming your bonsai trees or hauling your
model boat out of the pond. Get this block with (1) sheave and rig up
whatever you need. Each block has an aluminum frame about 3–1/2” long
with “S” hooks on each end. The sheaves, or wheels are about 2” dia x
1/4” wide, with a “V” groove that looks perfect to handle 1/8” or
smaller Venetian blind cord. These dudes are perfect for demonstrating
mechanical advantage in the physics lab!! But not for heavy lifting.
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Our web site always contains everything we have available for sale outside our retail stores. Typically, new items are listed on the site before they get published in our catalog...
Unlike Any Place On Earth
In addition to this fabulous on-line catalog of incredible stuff, American Science & Surplus has three great retail locations. If you're in the neighborhood, please stop by! Store hours may vary. Feel free to call for store hours and directions.