Item specifics:

Dimension: 11mm (height) x 9mm (outer diameter)
Effective diameter: 7mm
Shaft/Bore size: ø5mm
Material:Stainless Steel
High Quality Stainless Steel MK8 Drive Gear give 35% more power over the MK7 for gripping plastic filament in 3D Printers， Deep grooves give good hold for both 1.75mm and 3.00mm filament.
Fits 5mm Shafts with Allen / Hex grub screw.

Package Included:

1x MK8 Drive Gear for 1.7/3mm plastic filament