Pop Metric Ball Bearing 6002-ZZ.C3 (15x32x9mm)
6002-ZZ.C3 is a metal shielded bearing. It is metal shielded (on both sides) to stop dirt and contamination from entering the bearing while keeping the lubrication in.
This bearing's measurements are: 15mm(i.d.)x32mm(o.d.)x9mm(width)
Also if it has C3 on the end of it add: C3 clearance is a greater clearance than standard bearings to allow for expansion due to heat or high running speeds. Clearance is the tolerance between the inner, outer race and rolling elements of the bearing.