Cordless Cutoff/Slide Grinder, Bare Tool, Voltage 18. 0, Size 4-1/2 In. , Max. Wheel Dia. 5 In. , 8500 No Load RPM, Cordless Tool Battery Type Li-Ion, Brushless Motor Yes, Battery Included No, Battery Pack Replacement G4992714, Battery Capacity 4. 0Ah, Lock-on No, Lock-off Yes, Spindle Thread Size 5/8 In. x 11 UNC, Features Corded Power, Slim Design, Overload Protection, Electronic Clutch, Tool Free Guard and Accessory Changing, Slide Switch, Tool Length 12 In. , Tool Weight 4. 4 lb.