Steelmax D4X Features ?Multifunction Mag Drill with maximum hole cutting up to 4-5/16" (110 mm) diameter or drilling holes up to 1-7/8" (47 mm) diameter in 3"(76mm) thick steel . ?Morse Taper No. 4. ?High Torque 1650 Watt Motor. ?Four speed mechanical gear box. ?Motor overload protection system. ?One piece gearbox housing and slide. ?Semi-automatic gib backlash adjustment (patent pending) enables simple, fast and correct adjustments without any expert knowledge or experience. ?Replaceable spline at the end of armature shaft eliminates laborious and expensive armature maintenance. ?Compact design allows drilling very close to vertical surface. ?Magnetic Field Shape Control system (MFSC) which provides maximum holding power on thin material. ?Magnetic Power Adhesion Control module (MPAC) detects an adequate adhesive force of electromagnetic base for safe operation.