Cylinder position mechanism, the mechanism design is clever, the design constraints to internal card slot, as long as cooperate with the pin shaft can be realized before and after the two position constraint, this can have in the assembly line or the fixture positioning clappers positioning function, simple is clever, save a space.This model is transformed into step and iges general model download, please refer to!Also includes 3d original files, welcome to download! if you like,you can paypal for you to get this models or if you have any questions also you can email to me.