Voltage : 18 Battery Platform : Milwaukee M18 Maximum Speed : 31,000 rpm Weight : 2.95 Lb. Dimensions : 3.23 In. W x 6.86 In. H x 4.79 In. L Battery Included : No Charger Included : No Case Included : No Corded/Cordless : Cordless Battery Type : Lithium-Ion Motor Type : Brushless