Knurling wheel for MK7 extruders. Suitable for direct drive. Technical data Inner diameter (for motor axis): 5mm Outer diameter: 12mm Height: 13mm Diameter of the grooved part: ~ 10.5mm https://elecena.pl/product/22620904/mk7-extruder-knurl-reprap-3d-printer 2023-02-23 https://elecena.pl/product/22620904/mk7-extruder-knurl-reprap-3d-printer 2025-10-29