[Qty.10] S6004-2RS Stainless Radial Ball Bearing [20mm ID x 42mm ID x 12mm W]
A nice touch is the crisp QJZ brand, which adds a bit of confidence when installing it.
[Qty.8] New S6004-2RS Stainless Radial Ball Bearing [20mm ID x 42mm ID x 12mm W]
You will find that the QJZ brand is centered nicely it really does look professional.