Thank you for viewing! This is a motor unit for Plarail. It's a set of one 1-speed type and one 2-speed type. It supports size D batteries. I disassembled and greased them. Also, the pinion gear of the motor shaft, which is prone to damage, has been replaced with a Tamiya Mini 4WD carbon-reinforced type. The top cover is not glued. Also, there are traces of the cover having been removed once. Attachment screws are included. I assembled them into a bogie and ran them with two cars behind, and they climbed the slope rails without any problems. Please understand that these are used items before purchasing.