Makita is the leading manufacturer of professional power tools on the market. The hr166 is a 16mm, SDS plus, cordless, brushless hammer powered by 10.8V li-ion battery. Compact and lightweight, suitable for both upward and horizontal applications. The brushless motor eliminates carbon brushes enabling the motor to run cooler and more efficiently for longer life. 2 mode operation for rotation only or Hammering with rotation. The one touch sliding chuck allows quick and easy bit changes. with accessory set in a carry case