The Cure for Aerosol Finger Fatigue. Tired of painted fingertips? Now there's a better way. This double pack of spray can handles fit most aerosol cans of paint, lubricants, adhesives, cleaners, insecticides, and more. Ergonomic design makes using aerosols on large projects much less tiring and improves your spraying technique. To install, insert leading edge in front of nozzle and push down on handle until it pops in place. To release push handle down and lift up. Pack of 2 handles.