The modular metal tray provides keeping, storage and sterilization of medical products (implants, instruments) forwards, during and after operations. This new instrument tray enables a sterilization of the stored parts in the clinical use in an open and closed state. The plastic corners are built from especially resistant material and they undertake various tasks of the ramming and scratching protection, stackable up to the formal integration of the innovative grip caps. By the consistent design of identical parts there are only two different corner elements necessary, which are used several times at the Tray with different heights.