Cordless High Pressure Airless Spray Gun Paint Sprayer For Makita 21V BatteryWarm Reminder: After the spray gun is used, it should be cleaned in time to prevent the solidification of paint and other paint from blocking the spray hole. After cleaning, fill the water with a watering can and spray for about 1 minute in order to completely remove the residue inside the machine. Proper use and maintenance can make the machine last longer. Features: Quickly cool the air inlet and heat dissipation air inlet to facilitate heat