No,No, No NO.
PLEASE Don't put that in the cage with any gliders. I can tell you and show you why homemade wheels should not be used. I can tell you right now about 8 things that aren't safe on the one in the pictures just off the top of my head.
However if I did, that would only give you information on how to "fix" it, which still would not render it safe and I will not help or aid in that way and be responsible for your gliders.
Yes wheels are expensive, they are an investment. Wheel vendors work very hard on perfecting their designs and have spent years making them as safe as possible and have suffered great losses while they learned their lessons over the years.
I have worked on multiple medical issues with gliders injured on homemade wheels. I have pictures I can share. They are graphic, sad, expensive vet bills, and completely unnecessary
There is not much about glider husbandry that I'm hard nosed about, I am diet neutral, cage size neutral, toy neutral, breeding neutral etc...BUT, wheels and kitchen sink diets are the two things I AM hard nosed about.
I can give you all the proof you will ever need to make your own decision about putting that thing in a cage with gliders IF you are up to seeing the reality of what home made wheels do.