This 30 in extension is available for use with the right angle drive (rad) unit 48-06-2871 and Milwaukee® D-handle drills. The unit comes complete with 30 in extension tube, drive shaft with hex socket on both ends, 2 clamping collars and a side handle. The rad unit (48-06-2871) must be purchased separately. Milwaukee® Drive Extension, Right Angle, 1/2 in Shank, 30 in Length, Steel, For Use With: 48-06-2871 Right Angle Drive Unit and D-Handle Drill