Using the DeWalt DCK202P1 Woodworking Kit is a breeze. First, charge the 20V MAX* XR 5Ah battery with the 8 Amp Fast Charger. It charges twice as fast as the DCB115, so you won't have to wait long. For the Oscillating Multi - Tool (DCS356), use the Dual - Grip variable - speed trigger to control the speed according to your task. The Quick - Change accessory system means you can swap blades and attachments without a wrench. And with the 3 - speed selector, you can pick the best speed for what you're doing. When using the Random Orbital Sander (DCW210), adjust the variable speed dial from 8,000 - 12,000 OPM to suit your sanding needs. The texturized rubber overmold grip gives you a comfortable hold, and the low - profile design helps you sand precisely. Changing sandpaper is easy with the replaceable 8 - hole hook - and - loop sanding pad. As for maintenance, keep the tools clean after each use. Wipe off any dust or debris, especially from the dust - sealed switch on the sander. Store the tools in a dry place to prevent rusting. And when not in use, keep the battery charged to maintain its lifespan.