1975 Steering Wheel

Yes, those are spring pockets. It holds the center up and away and allows you to push on the center to activate the horn.

You should be able to find those at a good hardware store with the bins of springs, bolts etc. Take the steering wheel in with you to get the proper size. They are a medium weight spring. I lost one when I had mine apart and was able to find one that fit.

EDIT: If I recall they are about an inch long, maybe a hair more.