The Milwaukee M18ONEPP2A2-502X contains the M18ONEPD brushless percussion drill and the M18ONEID brushless impact driver. Both tools are ONE-KEY enabled which means that they can wirelessly connect to a smart phone to provide unlimited customization and control of the tool's performance. The ONE-KEY Mobile app features predetermined set-ups for specific fasteners and materials, or provides complete control over output speed and power to customize the tool for the specific application at hand. Once the desired output performance is reached, the custom profile is then saved to the memory of the tool and the connection to the smart phone is no longer necessary. The tool's memory supports up to 4 custom profiles that can be easily accessed with the touch of a button on the tool. Your custom profiles are also saved in the cloud so that they can be accessed at any time.