Model DHP453 is a cost-competitive 18V cordless hammer driver drill featuring: single sleeve keyless drill chuck for easy bit installation/removal. Compact and lightweight design for easy handling. New Ergonomic Grip Features include: Lithium-ion batteries have greater life spans than their Ni-MH or Ni-Cad counterparts giving 430% greater run time. Lithium-ion's 40% weight saving means 18 volt power can be obtained by a battery that weighs the same as a 12 volt Ni-MH battery. Conveniently located push button for forward and reverse. High comfort grips. Two speed gear box. Metal gears.