Gear, Chain Drive, 5mm (Nema 17) hole, 9 tooth

This is a gear I designed to go with my plans for a Buld Your Own CNC inspired mill. It has a 3/16 hole to be able to use on nema 17 motors, but it was designed to be an idler pulley since we make them in plastic. It is usable with the chain that he has on that site (40-1) --- Imported from Thingiverse: https://www.thingiverse.com/thing:4755 Original creator: flintols