DEWALT XR 4.5 in 20 Volt Max Paddle Switch Brushless Cordless Angle Grinder 4C Horizontal Mailboxes delivering users with more work delivering users with more work per charge and more work over the life of the pack than competitive batteries ) 30 Shelf Features No Additional Features Shelf Included Components Hooks Inner and Outer Flange Variable Speed No Number of Batteries Included for Tool 0 Side Handle Yes Battery Type Lithium ion (Li ion) Charger Included No Warranty (Parts) 3 year limited Base Material Plastic Housing Material Metal Grinding Wheel Included No Motor Bearings Metal Gearing Type Single speed Brushless Yes Battery Voltage 20 volt max Switch Type Paddle Wheel Diameter (Inches) 4 DEWALT brushless motor delivers up to 57% more run time over brushed Brake stops wheel in 2 seconds or less on average Kickback Brake engages when a pinch