100 may be inserted with the shim plate 100 having a central opening through which the pinion shaft 70 and gear 72 may pass so that the pinion gear 72 may engage the planet gears 84 with the illustrated configuration the output shaft 90 of the planetary gear set 74 is reduced by a factor of 9 relative to the rotational speed of the pinion shaft 70 this therefore reduces the rotational speed of the output relative to the input and also proportionately increases the torque that is produced by the hand tool referring to fig4 and 5 the output shaft 90 has a bushing plate 102 that is cylindrically shaped and has an outer annular flange 104 which is sized to fit within the inside of the gear housing 82 which effectively encloses the gear set 74 once assembled the rim of the gear housing 82 is preferably crimped against the outer circumference of the annular flange 104 as shown at 106 in fig4 to substantially seal the interior of the housing including the carrier plate 88 and gears 84 that are located within the gear housing 82 a bushing 108 is located within the bushing plate which is also held stationary relative to the rotating output shaft portion 90 it should be understood that the inside diameter of the bushing 108 is sized to receive the output shaft.