Makita LXDT04X1 18V Li-on Impact Driver Kit w/Impact Gold Bit Set Makita LXDT04X1 Impact Driver Kit features 11-PC Bit Set Variable speed (0-2,300 RPM & 0-3,200 IPM) for a wide range of fastening applications Compact and ergonomic design at only 5-7/16" long Weighs only 3.3 lbs. with battery for reduced operator fatigue Convenient one-touch 1/4" hex chuck for quick bit changes