The bar is the most important part of the set. Look for these specs:
Usually not used for dropping; diameter can vary between brands. 🏋️ Choosing the Right Barbell buy olympic weight set
Loud, can rust if not coated, will damage floors if dropped. Bumper Plates (Rubber) The bar is the most important part of the set
CrossFit, Olympic lifting (cleans/snatches), and home garages. can rust if not coated
I can then recommend or types of plates that fit your space!