A device for use with a radiation machine includes a first cone collimator, wherein the first cone collimator has a first end for receiving a radiation beam, a collimating portion for changing the radiation beam, and a second end for emitting an output beam, and wherein the first cone collimator is configured to be detachably coupled to a coupling device that has a plurality of moveable switches, and has one or more engaging portions configured to engage with a first subset of the plurality of switches. A method of using a cone collimator includes receiving a portion of a cone collimator, determining a subset of a plurality of switches that is pressed by the cone collimator, and determining an identity of the cone collimator based on the subset of the plurality of switches that is pressed by the cone collimator.