Milwaukee 2783-22 M18 Fuel 4-1/2" / 5" Braking Grinder - Kit M18 Fuel 4-1/2" / 5" Braking Grinder - Kit The product is easy to use and easy to handle The product is highly durable Voltage: 18V, Battery: M18 REDLITHIUM, Charger: M18 and M12 Multi-Voltage Charger