A hand-held power tool comprising: a housing supporting a motive source; wherein the housing includes a front endbell; an output shaft protruding from an output end at the front endbell of the housing; wherein the output shaft is functionally coupled to the motive source such that the output shaft rotates in response to activation of the motive source when the motive source is supplied with power; a front housing defining an interior space; wherein the output shaft is located in the interior space of the front housing; and a gear set assembly located in the interior space of the front housing; wherein the gear set assembly is configured to transfer rotation from the output shaft to an output spindle; wherein the gear set assembly includes a ring gear, wherein the ring gear further comprises an annular ring body having a plurality of teeth located on the interior periphery of the annular ring body and a surface located on an exterior periphery of the annular ring body opposite the interior periphery; wherein the ring gear surrounds a portion of the output shaft and abuts the front endbell of the housing, the front endbell being enclosed in the interior space of the front housing; wherein the surface located on the exterior periphery of the ring gear abuts an inner surface of the front housing; wherein the front housing and ring gear include one or more piloting features (90, 102, 108), each of the one or more piloting features being configured to mate the front housing with the ring gear; characterized in that the one or more piloting features comprise: a first set of piloting features (92,94) located on the interior surface of the front housing and on the surface of the exterior periphery of the ring gear; wherein the first set of piloting features is configured to prevent movement of the ring gear relative to the motive source and the front housing; and the hand-held power tool further comprising: a second set of piloting features (92,96) located on the front housing and on the endbell of the housing; wherein the second set of piloting features is configured to prevent the front housing from moving relative to the housing. a housing supporting a motive source; wherein the housing includes a front endbell; an output shaft protruding from an output end at the front endbell of the housing; wherein the output shaft is functionally coupled to the motive source such that the output shaft rotates in response to activation of the motive source when the motive source is supplied with power; a front housing defining an interior space; wherein the output shaft is located in the interior space of the front housing; and a gear set assembly located in the interior space of the front housing; wherein the gear set assembly is configured to transfer rotation from the output shaft to an output spindle; wherein the gear set assembly includes a ring gear, wherein the ring gear further comprises an annular ring body having a plurality of teeth located on the interior periphery of the annular ring body and a surface located on an exterior periphery of the annular ring body opposite the interior periphery; wherein the ring gear surrounds a portion of the output shaft and abuts the front endbell of the housing, the front endbell being enclosed in the interior space of the front housing; wherein the surface located on the exterior periphery of the ring gear abuts an inner surface of the front housing; wherein the front housing and ring gear include one or more piloting features (90, 102, 108), each of the one or more piloting features being configured to mate the front housing with the ring gear; characterized in that the one or more piloting features comprise: a first set of piloting features (92,94) located on the interior surface of the front housing and on the surface of the exterior periphery of the ring gear; wherein the first set of piloting features is configured to prevent movement of the ring gear relative to the motive source and the front housing; and the hand-held power tool further comprising: a second set of piloting features (92,96) located on the front housing and on the endbell of the housing; wherein the second set of piloting features is configured to prevent the front housing from moving relative to the housing. a second set of piloting features (92,96) located on the front housing and on the endbell of the housing; wherein the second set of piloting features is configured to prevent the front housing from moving relative to the housing.