Upgrade your stock brass extruder gear, found on many MK8 style extruders. Made of tool steel, this is the hardest gear available and will hold up to years of use. A great replacement gear for the brass gear on the stock Creality CR-10 line of 3D printers.
The gear is 11.15mm which means it is 2.3% larger than the stock CR-10 10.9mm gear. Stock profiles will work with this gear.
Inner Diameter: 5mm
Outer Diameter: 11.15mm
Mounting Hole: M3 grub