The Batavia MAXXPACK Impact Driver has a brushless motor for increased power and extended service life. It has variable speed control and a soft start feature for added control. Fitted with an ergonomic, soft grip handle for increased user comfort and control. There is also an LED job light, ideal when working in dark spaces. Comes as a Bare Unit, No Battery or Charger. Specification: Bit Holder 6.35mm (1/4in).No Load Speed: 0-2,200/min.Impact Rate: 0-3,300/bpm.Max. Torque: 180Nm.Sound Pressure Level LpA: 74.98 dB(A).Weight: 1.12kg.