The locking screw mechanism, which has the function of the cylinder, has the cushioning function and reduces the impact force of the installation.At the same time, the batch head is directed to catch the screw assembly, and the z-axis module is adjusted to adjust the displacement to fit the different installation products.The overall mechanism can be used directly in the diagram, and can be called on many locking screws.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.