This gear kit is designed for Prusa i3 3d printer DIY. The gears come as a set consisting of a primary drive gear with a M3 setscrew, fits on a 5mm shaft with a flat side as those on standard Nema17 motors. A secondary drive gear with integrated high quality bearings and a shaft diameter 3.00 lenght 20 mm in precision ground hardened steel.
Dual drive gears for 1.75 mm filament, precision custom cnc machined with extreme precision guarantees that you get the grip you always wanted.
Manufactured in hardened steel with an protective surface treatment will give you long lifetime and extreme reliability.
A lithium based grease is recommended to use on the gear section and in side the needle bearings for low friction and to avoid wear. A small dab of grease is enough.
After-sales guarantee: each defective item can be replacement for free or refund. If any question, please feel free to contact or QA us, we will try our best to service you.