Without me, race cars don’t make the turn and your money might be under your mattress.

I can spin, I can swirl, I can cool with my twirl, I sit at the edge of my seat and scream, I go to every game of my favourite team, I can open and close with a satisfying snap, I can lay quietly in a lady’s lap.

I hold the flakes of morning come Adding -ing can roll a ball Upside down i'm a dome Many sizes, short and tall

A sideways hole, the insides quite hollow With pressure, you may give in, yield or collapse.

What has many keys but can’t open a single lock?