🔧 Ultimate Power Transmission Enhancement: Inch Chrome Steel Bearing Balls for Top-Performance Bearings Review

Ordered 2 sets for the marble run (Science Olympiad). One sentence was ok; In another set, each ball had a rusty stripe down the middle. Too much hassle/cost to send them back but I'm very glad I ordered 2 sets just to make sure one set worked.

I ordered these for a marble coaster contest my son was entering. The rules state that he can use a 1/2 inch diameter glass or steel ball. I have a few 1/2" glass balls (I measured them with calipers) but thought a steel ball would be a better option. When it arrived it was significantly less than 1/2" in diameter. So useless on the route my son designed for a ball that is actually 1/2" in diameter. BEWARE.

As others have said my bearings arrived in a ziplock bag, rusty, pitted and corroded. So if you expect them to look like the picture you will be very disappointed. said, "I bought them to make Affenfaust Begleri and they worked flawlessly for that purpose. Just the right size and shape for a single cord 3-way monkey fist and just the right weight to swing all day without killing anyone's hand, so hopefully this will help someone with a future purchase.