An instrumentation kit for use in preparing a shoulder to receive a glenoid component comprising: at least one combination device which has a body portion, and which includes: a boring section which extends distally from the body portion and is configured to rotate so as to form a first bore in a glenoid of a shoulder, a drive section which is defined by the body portion and so is operably connected to the boring section, the drive section being configured to receive a rotational force, and a reaming section which is positioned proximally from the boring section and extends distally from the body portion, the reaming section being operably connected to the drive section, and configured to rotationally ream a portion of the glenoid, in which the reaming section and the boring section are positioned with respect to each other such that when the combination device is positioned against the glenoid and the rotational force is applied to the drive section, the boring section rotationally forms the first bore in the glenoid and the reaming section simultaneously rotationally reams a portion of the glenoid adjacent to the first bore, characterised in that the combination device includes at least one drill guide which is defined by the body portion and which is configured to guide a drill bit and positioned so as to guide the drill bit to form a second bore in the shoulder at a location spaced apart from the first bore. at least one combination device which has a body portion, and which includes: a boring section which extends distally from the body portion and is configured to rotate so as to form a first bore in a glenoid of a shoulder, a drive section which is defined by the body portion and so is operably connected to the boring section, the drive section being configured to receive a rotational force, and a reaming section which is positioned proximally from the boring section and extends distally from the body portion, the reaming section being operably connected to the drive section, and configured to rotationally ream a portion of the glenoid, a boring section which extends distally from the body portion and is configured to rotate so as to form a first bore in a glenoid of a shoulder, a drive section which is defined by the body portion and so is operably connected to the boring section, the drive section being configured to receive a rotational force, and a reaming section which is positioned proximally from the boring section and extends distally from the body portion, the reaming section being operably connected to the drive section, and configured to rotationally ream a portion of the glenoid, in which the reaming section and the boring section are positioned with respect to each other such that when the combination device is positioned against the glenoid and the rotational force is applied to the drive section, the boring section rotationally forms the first bore in the glenoid and the reaming section simultaneously rotationally reams a portion of the glenoid adjacent to the first bore, characterised in that the combination device includes at least one drill guide which is defined by the body portion and which is configured to guide a drill bit and positioned so as to guide the drill bit to form a second bore in the shoulder at a location spaced apart from the first bore.