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Specifications:Voltage: 20V Max3-Speed: 0-1500/2500/3250 RPMImpact Frequency: 0-2100/3500/4550 IPMChuck Size: 1/2" (13mm)Chuck Type: Square HeadMax Torque: 350Nm (3100in-lbs)Battery Capacity:3000mAhCharging Time: About 1 hoursNet Weight:3lbs