2pcs MK8 Drive Gear For 1.75mm !#!amp!*! 3mm Filament 3D Printer Extruder Pulley 5mm Shaft
Item specifics:
1.Dimension: 11mm (height) x 9mm (outer diameter)
2.Effective diameter: 7mm
3.Shaft/Bore size: ø5mm
4.Material：Stainless Steel
5.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.
6.Fits 5mm Shafts with Allen / Hex grub screw.

Package Included:
2pcs x MK8 Drive Gear for 1.7/3mm plastic filament