Discovery Stem Mindblown Model Engine Kit With Moving Parts See Through Design

Discovery #Mindblown Stem Kit Model Engine Kit Moving parts and Led Lights 104 Piece Kit Intermediate Skill Level Working Crank Shaft, Valves, and Spark Plugs to simulate how a real engine works New In Box Excellent Gift For Yourself or an Avid Hobbyist Bundle and Save! #Discovery #Mindblown #Engine #Model #Kit #Hobby #Science