V20 lithium ion (20V MAX battery, maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18). Tool only battery & charger sold separately. 12,000 0PM. Connects to 1-1/4 inch vac hose. Dust-sealed switch for durability. 12,000 0PM for power. Dust collection bag & vac connection. Specifications: Voltage: 20V Max (20V MAX battery, maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18); Max Orbits: 12,000. Orbit Diameter: 3/32 inch (2.4 mm); Weight (Tool only): 2.4 lbs (1.1 kg). Includes: CMCW220 random orbit sander, dust bag, sample Sandpaper. US & Canada only. Versatrack compatible (Versatrack clip and accessories sold separately see Craftsman.com for details). Product may differ from that pictured. Does not affect function.