"""The DCK590L2 20V MAX Lithium Ion 5-Tool Combo Kit includes a hammerdrill with a 3-speed transmission, reciprocating saw with keyless blade clamp, circular saw with 6-1/2"""" carbide blade, impact driver with 3 LED lights and a 20V MAX LED work light. DCD996 has a DeWalt-built high power, high efficiency brushless motor that delivers up to 75 percent more runtime vs. 18V NiCad brushed motors. DCS570 uses a 7-1/4"""" blade to provide 2-9/16"""" cutting capacity at 90 degrees and it has runtime to complete 330 crosscuts in 2x4 (pine)."""