Description Description 20V Cordless Brushless Flexible Grinder 4-1/2". Includes Batteries and Charger. Angle Grinder Description 20V Flexible Grinder-Brushless motor-Voltage: 20V-No-load speed: 3000/9000 rpm-Disc diameter: 4-1/2''''-Spindle thread: 5/8-11UNC-Includes 1 3.0Ah battery pack (WLBP530)-Includes 1 charger (UWFCP510)-Charging voltage: 110V-120V~50/60Hz-Packed in color box. View AllClose