Milwaukee M12 BIW38 is a high-performance Sub-Compact Impact Wrench that measures 165mm in length making it ideal for working within confined spaces Has a heavy-duty full metal gearbox and gears for superior durability and maximum torque 38in square drive for use with universal sockets The optimised handle provides improved grip and better control On board fuel gauge and LED light give added user convenience and illumination in low lit working conditions REDLITHIUM-ION™ battery pack delivers twice the run time up to 20 more power twice the battery life and operates better down to -20°C than other lithium-ion technologies Individual battery cell monitoring optimises tool run time and ensures long term pack durability Flexible battery system that works with all Milwaukee M12™ batteries Specifications Bit Holder 38in Square No Load Speed 0-2500min Impacts Per Min 0-3300min Max Torque 135Nm