Review on 🔧 Genuine E3D Hobb-Goblin V2 - 5mm Internal Diameter Drive Gear (M-HOBB-V2-50-0-BORE) by Michael Moulton

Very similar to imported MK8 but MAN is not the same. The thing is the best in the world. Noticeable improvement in print quality. The cutter diameter is about 7.62mm (the imported ones I have are closer to 7.25mm). It's a bit larger than the stock gearing on the MK2, but I've heard people use it for this without having to modify the extruder body. Not sure how this is possible as I had to modify the body to fit the import which is even bigger but *shrug*. Lots of people do this. I don't have Prusa, but I'm using a MK2.3 extruder remix on my clone. It works great in my modified extruder body so can't complain! My step size per mm is 156.5 with a 1.8 degree step counter at 1/16 microstep.