DCG413: kickback brake stops wheel in 2 seconds or less on averageDCG413: safety - two stage trigger requires two actions to activate toolDCG413: extended tool life with brushless motorDCG426: up to 25,000 rpm with variable speed triggerDCG426: provides user options for multiple handle grasping points with dual-position rocker switchIncluded components: (1) DCG413 20V MAX XR 4.5 in. Paddle Switch Small Angle Grinder With Kickback Brake; (1) DCG426 20V MAX XR 1-1/2 in. Variable Speed Cordless Die Grinder; (1) DCB205 20V MAX XR 5Ah Battery; (1) DCB118 8 Amp Fast Charger