The present invention discloses a self-fastening cage of a magnetic resonance device (MRD) for providing a homogeneous, stable and uniform magnetic field therein, characterized by an outside shell comprising at least three flexi-jointed superimposed walls. The multi-streamed MRD comprising a cage including a closed magnetic circuit constructed from strong permanent magnets; and optionally a shimming mechanism selected from an array of active shim coils, passive shimming elements; a contained cavity within which the magnetic field strength is approximately uniform; and a plurality of conveyor belts, pipes or any transportation means by which a plurality of samples are introduced into the region of uniform magnetic field; such that magnetic resonance measurements are made on a plurality of samples within the region of uniform magnetic field. The invention depicts a cost effective method for obtaining a self-fastening cage.