3/8" Steel Ball Bearings / Marbles, 10/pack

USD $2.63

10-pack of 3/8" diameter (0.375" / 9.525mm) G40 Loose steel balls used in ball-bearings. From the stock we use in our marble kits!

In stock

SKU: 60315 Categories: , ,


These are loose 3/8" Chromed Carbon-steel G40 bearings. These are not in a bearing-race. Think of these like "Steely" marbles when you were a kid (many, many moons ago).

We use these in our Marble Machine Kits, and as magnetic swivel points on our CarouSol "Squid Hunting" kit

  • 3/8" (0.375") diameter (9.525mm)
  • 3.6g each
  • LOTS OF 10. Buy 1 means you get a pack of 10 balls!
  • Grade 40


Additional information

Weight .036 kg
Dimensions 5 × 2 × 1 cm


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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.

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