608zz steel bearing with two metal shields (ZZ) to fit,roller skates,inline skates, 3D printers. (ID) Inner diamater : 8mm , (OD) outer diameter: 22mm , (D) depth / thickness: 7 mm Status: BNS (Brand New stock) Brand: generic (domestic grade - non industrial) Please enquire should you need trade quantity ( i.e lots of 100+) factory greased,