Specification : Voltage : 18 v No load speed : 1,700/ 2,000/ 2,500/ 2,000 rpm Impact rate : 2,400/ 2,600/ 3,100/ 2,600 ipm Max.torque : 40/ 120/ 300/ 120 Nm Tool reception : 1/2' square (Multi-Fit) Weight with battery pack : 1.8 kg