Makita XDT16 / DTD171 18V Li-ion Cordless Brushless 4-Stage Impact Driver

Features:

Quick-Shift Mode uses the brushless motor’s electronic controls to find the best balance of speed and torque for each application. 
The Brushless Motor delivers 3,600 Max RPM and 1,600 in.lbs. of Max Torque
4-speed power selection (0-1,100/ 0-2,100/ 0-3,200/ 0-3,600 RPM & 0-1,100/ 0-2,600/ 0-3,600/ 0-3,800 IPM) provides precise fastening control for a wide range of applications
Additional one-touch 4-speed power selector button under the chuck for added convenience
Assist Mode (A-mode) feature helps eliminate "screw cam-out" and "cross threading" by driving at low speed until tightening begins
Two Tightening Modes (T-mode) for faster tightening of self-drilling screws in thick or thin gauge metal
Reverse rotation auto-stop mode stops rotation and impact when fastener is loosened adequately
Built-in L.E.D. lights on both sides helps eliminate shadows

Specifications:

Hex Shank : 1/4"
Speed power selection : 4
No Load Speed (var. 4 spd.) : 0 - 1,100 / 0 - 2,100 / 0 - 3,200 / 0 - 3,600 RPM
Impacts Per Minute (var. 4 spd.) : 0 - 1,100 / 0 - 2,600 / 0 - 3,600 / 0 - 3,800 IPM
Maximum Torque: 180 Nm

Includes:

XDT16 Impact Drive - Skin Only

NB: Bare tool only - Does not include battery or charger