PORTER-CABLE PCL418IDC-2 18-Volt Lithium-Ion 4-Tool Combo Kit At only 3.8-pounds the Porter Cable compact lithium drill/driver reduces user fatigue when using for extended periods Lithium drill/driver features 2 position gearbox with high speed for drilling and driving and low speed for high torque applications Lithium drill/driver's 1/2-Inch metal single sleeve chuck offers excellent bit retention and durability Impact driver delivers 1600 in-lbs high-torque output without kickback With a length of only 6-1/2-Inch, impact driver fits into tight areas not accessible by larger impact drivers and drills