Expansion Tool Kit, Voltage 12.0 V, Includes (2) M12 1.5 Ah REDLITHIUM (TM) Compact Batteries, (3) Expansion Heads: 1/2 in, 3/4 in, 1 in, Carrying Case, Extra M12 2.0 Ah REDLITHIUM (TM) Compact Battery, M12 Battery Charger, M12 ProPEX Expansion Tool