18V IMPACT DRIVER (1/4" HEX), SSD18|Metabo's SSD18 is a compact cordless impact screwdriver for tough applications, and is a high torque tool with low kick-back torque. It has three speed and torque levels, with variospeed electronics for infinitely variable change. A die-cast aluminum gear housing promotes optimum heat dissipation and stability. It has numerous safety features built in, including electronic overload protection, integrated temperature monitoring and a mechanism to prevent overcharging the battery. Model SSD18 includes a carrying case, 2 Li-Power Extreme battery packs and an Air-Cooled quick charger.