Reach floors or ceilings easily with this extension giving up to 30 in. of additional drilling reach. The superior transfer of power and torque allows drilling up to 2-9/16 in. diameter holes. This extension only works with the following models from Milwaukee: 1001-1, 1007-1, 1101-1, 1107-6, 1201-1, 1250-1 (Tool not included).