PORTER-CABLE PCL418C-2 18-Volt Lithium-Ion Cordless 4-Piece Combo Kit Lithium-ion technology results in 18V battery packs that are lightweight and robust Compact, lightweight drill/driver fits into small areas and reduces user fatigue when using for extended periods 6-1/2-inch circular saw provides more efficient cutting and greater cutting capacity Compact reciprocating saw allows cutting in tight areas difficult to access with larger saws