4x9x4 mm ball bearing with flange. Ball bearings for universal applications, including CNC construction, 3D printers, etc. Technical data Model: F684ZZ Type: Flange bearing Axle Diameter: 4mm Width: 4mm Outer diameter: 9mm Material: Chromium Steel https://elecena.pl/product/22625263/f684zz-4x9x4-mm-flange-ball-bearing 2023-02-23 https://elecena.pl/product/22625263/f684zz-4x9x4-mm-flange-ball-bearing 2025-10-28