Drive-gear

Drive-gears to be used in direct drive and some other extruders (like the Adrian's_Geared_Extruder).

Model	From	Length	Outer diam.	Hob diam.	Bore	Approximate Cost	Additional notes
Twelvepro.com MK7 Drive Gear	IN	11 mm	12,5 mm	10,56 mm	5 mm	4.99 $	This MK7 Drive Gear is made up of 304 Steel and suitable for both 1.75 and 3.00mm filament. Made in USA- ship worldwide!
3D Acessories Hub Drive Gear	IN	11 mm	12,5 mm	10,56 mm	5 mm	5.25 $	This MK7 Drive Gear is made up of brass and suitable for both 1.75 and 3.00mm filament.
fabberworld.com MK7 Drive Gear	Switzerland	11,2 mm	12,75 mm	11,22 mm	5 mm	12.50 CHF	The best drive gear on the market. Made in stainless steel and are good for both 1.75 and 3.00mm filament.
RepRap.me MK7 Drive Gear	EU/Denmark	11 mm	12,5 mm	10,56 mm	5 mm	From 4.52$	The best drive gear on the market. Made in stainless steel and are good for both 1.75 and 3.00mm filament.
RepRap.me MK8 Drive Gear	EU/Denmark	11 mm	9 mm	7 mm	5 mm	From 6.11 $	MK8 is a new evolution of the MK7 Drive Gear. The smaller diameter gives 35% more power. Made in stainless steel and are good for both 1.75 and 3.00mm filament.
Mendel-Parts hobbed shaft stainless-steel insert brass insert	Netherlands	? mm	? mm	? mm	M4, M5, M6 5,1 mm	14 € 4€ 3€	stainless steel
QU-BD	US	11.03 mm	11.64 mm	10.5 mm	5 mm	7,50 $	Brass alloy. (maybe better suited for 3mm than 1,75mm)
RepRapWorld	Netherlands	10 mm	12 mm	? mm	5 mm	8 €	"mk7 compatible"
Mini-hyena	Hungary	13 mm	8 mm 11 mm 11 mm 13 mm	6 mm 9 mm 9 mm 11 mm	5 mm 5 mm 8 mm 8 mm	12 $	made by Arcol !
TrinityLabs hobbed pulley	US	11 mm	13 mm	11 mm	5 - 8 mm	8$	by BLDDK (you may ask him or ezmobius on the IRC
Makemendel	India	11 mm	12.8 mm	? mm	5 mm	$5.25 USD / $6.99 USD	Brass MK7 Drive Gear SS MK7 Drive Gear
Deezmaker Tatsu v2	US	11 mm	13 mm	11 mm	5mm 6mm	$25 USD	Hardened stainless steel. Super-sharp teeth, with increased space between to allow them to sink deeply into filament. Wraps more loosely around filament to keep it centered while avoiding filament grinding due to the difference between minimum and maximum diameters along the contact between teeth and filament.
Brass insert
3D Acessories Hub Brass Insert	IN	11 mm	12,5 mm	10,56 mm	5 mm	11 $	. This Brass insert piece is made in Brass and are Suitable for both 1.75 and 3.00mm filament.
Conrad.com Conrad-uk	EU UK	? mm	? mm	? mm	M4	3 € 4 £	-
Maritime-models	UK	? mm	? mm	? mm	many	1,80 £	need some use to grip more effectively
Paoparts	France	15 mm	? mm	8 mm	M4	5.30 €
Voelkner	Germany	? mm	? mm	? mm	M5	2.95 €
Pb-modelisme	France	?	?	?	5 mm	3,50 €
Ok-modelisme	France ?	?	?	?	5 mm	3,30 €