Using this Milwaukee knockout tool is easy. First, make sure your M18 REDLITHIUM XC battery is fully charged using the M18 & M12 Multi - Voltage Charger. Then, select the appropriate 1/2' to 4' Exact Punch and Die for your job. Attach them to the tool using the Quick Connect Accessory. Position the tool on the material where you want to punch the hole, using the cross - hairs on the die for accurate alignment. Press the trigger to start punching. When punching, keep the tool steady to ensure a clean hole. After use, remove the slug through the slug removal ports. Always store the tool in the provided carrying case to protect it. Check the battery regularly and recharge it when the power is low. Keep the punches and dies clean and lubricated to maintain their performance. This tool is compatible with competitive accessories, but make sure to check for proper fit before use. Avoid using the tool on materials that are beyond its capacity, such as steel thicker than 10 - gauge mild steel or 12 - gauge stainless steel, as it may damage the tool.