Robust die cast aluminium gear housing for optimum heat dissipation and durability Rotating carbon brush bridge for maximum performance even in anti-clockwise operation, e.g. for the removal of stubborn screws Vario (V)-Electronics for working at customised speeds to suit various application materials Thumbwheel for speed preselection Two-speed gearbox Metabo Marathon motor with patented dust protection for long service life Metabo S-automatic safety clutch: mechanical decoupling of the drive for safe working should the drill stop unexpectedly Forward and reverse rotation Spindle with hexagonal recess for screwdriver bits for working without chuck Handle with non-slip soft-grip surface Cable-protecting ball joint for optimal freedom of motion when working Characteristics Rated input power 850 W Output power 490 W Drill Ø steel 13 / 8 mm // 1/2 / 5/16 " Drill-Ø soft wood 40 / 25 mm // 1 9/16 / 1 " No-load speed 0 - 1100 / 0 - 3100 rpm Revolutions at rated load 640 / 1800 rpm Gears 2 Maximum torque 36 / 14 Nm // 319 / 124 in-lbs Collar diameter 43 mm / 1 11/16 " Chuck capacity 1.5 - 13 mm // 0.059 - 0.512 " Drill spindle with hexagonal recess 6.35 mm / 1/4 " Drill spindle thread 1/2 " - 20 UNF Weight (without power cable) 2.6 kg / 5.7 lbs Cable length 4 m / 13 ft Vibration Drilling in metal 4.2 m/s² Uncertainty of measurement K 1.5 m/s² Noise emission Sound pressure level 85 dB(A) Sound power level (LwA) 96 dB(A) Uncertainty of measurement K 3 dB(A)