The rotary clamping mechanism, this model is constructed by frame structure, which forms a multi - station structure.Can be cantilever to perform multi-station fetching objects, load large, standard reference model.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.