The wheel comes with 10 different types of studs, mostly gold, with some silver and one type is black. There are circles, squares, triangle, hearts, stars, diamonds, and rectangles. Amazing amount of variety.
Here's a few looks I've worn recently using them:
China Glazes neons with random stud usage
CG I'm With The Lifeguard and Femme Fatale Cosmetics Plantar Anomalies with silver squares
China Glaze Something Sweet and For Audrey, Peita's Polish Razza-matazz ad a heart stud.
Everything about these studs is great. They're easy to use, and top coat doesn't affect them. I stick them on with top coats and they last very well with just that. Some of the larger ones may not still on your nail properly, but they are flat, and your nails aren't so that should be expected. They are crazy versatile too.
Don't forget to check out what amazing nail art equipment Born Pretty has, and feel free to use my 10% off code, AFL91:
*the products mentioned in this post were sent to me for my honest review. This in no way affects my opinion of them*