Hobb-Goblin Drive Gear - 8mm ID.
Note: For 3mm or 1.75mm filament diameter
Genuine E3D filament drive gear made from premium stainless steel.
Manufactured on a synchronised CNC processs for a sharp, consistent, and clean cut tooth profile that has incredibly good grip.
These are a great match for NEMA17 geared stepper motors with 8mm shafts to create high performance extruders for 3mm or 1.75mm filament.
Attaches to a 8mm motor shaft with an included M3 Set Screw.