The MK7 extruder drive gear is a replacement gear for the extruder of a 3D printer. It is typically made of hardened steel and is used to drive the filament through the extruder assembly. The gear is known for its durability and reliability. It is compatible with various models of 3D printers, including the Prusa i3, and can be easily installed as a replacement for a worn or damaged gear.

This drive gear is designed for the MK7 extruder, and has an inner diameter of 5mm with an outer diameter of 12mm. This makes it a perfect fit to maintain high torque on the Printing Filament, which translates to smooth and consistent extrusion without cutting or scraping the filament on its way past.