Two bears in the floor after replacing cv boot and brake pad

[monmon_kng]

Hi guys i'm new to the forum and i have a question, today i was replacing the cv boot and brake pads after finishing the job i found two small bearing on the ground i'm not sure if those was here before or it's from the car! any advice?

[AZhitman]

What size are the bearings?

The CV joint has bearings (a little smaller than a marble), but you'd know pretty quickly if you lost those (the CV axle would tear itself apart on the test drive).

[monmon_kng]

it's about 0.5mm diameter, i saw the cv bearing it's prety big (around 1.5mm) and on the test drive it was good, i have another problem now i have done side but the cv joint on the other side don't want to come out!!