20 Multi-Colored 1/2" Chrome Steel Balls for GraviTrax Marble Run | Coloured Marble Set Great for Racing, Rolling | Colored Marbles Compatible with Marble Runs & Games

Great value as these are weighty, smooth, and the colors are rich. Will be buying again as I want some extras.

This package allows more play options for Gravitrax. Multiple events or creating a snake like movement.

Little smaller than expected but worked great for a marble game.

Beautiful, high quality marbles, quite heavy. Very lovely set. However, they were packaged in two or three layers of plastic bags…the outward bags were intact, but the inmost bag had a hole in it, and one marble is missing. Other than that, great set.

I got these balls to play with around the house. I really like the colorful balls and jelly bounce off of each other from time and time again. These balls will hold up well from what I can tell and I’ll have a long life of ball busting against the hard wood in my house.

Just what we expected and needed!

We received a couple of GraviTrax companion kits, but no starter kit. I couldn't afford a starter kit, so I bought these. My child can play with the companion sets and these balls for hours on end without the starter kit. I'm very glad I purchased them!

The Marble Set was 20 count. But unfortunately the five red ones were not good. The color were peeled. See picture attached. The rest of them came Ok!

Unlike other low scoring reviews, my package didn’t come with damaged marbles.It did come three marbles short though. First thing I noticed opening the bag: “that doesn’t look like twenty”Counted and confirmed 4 blue green and silver. 5 of the red only.Poor effort. I thought they were overpriced for twenty, for just seventeen, it’s kind of insulting.