V-groove Pulley Bearing V625Z

From the shop's description

Ball Bearing V625Z V625ZZ V623ZZ Seal type Z ZZ ZZ Inner diameter 5 mm 5 mm 3 mm Outer diameter 16 mm 16 mm 12 mm Thickness 5 mm 5 mm 4 mm Groove depth 0.5mm 1.5mm 1.4mm Material Carbon steel Carbon steel Carbon steel