To learn more about Positron, a mini - portable printer with no compromise, check out their site here.
This product is for a motor kit, made by LDO motors for the Positron. This kit contains 4 motors:
LDO-42STH20-1004ASH(PV3) 2pcs for X/Y
LDO-36STH20-1004AHG(PV3) 1pcs for E
LDO-35STH28-0404A(PV3) 1pcs for Z