MixKwik aerosol can shaker/mixer is better than a "Handshake" * Use on LOW SPEED to acheive great results and long life * 20 to 30 seconds of shaking with the MixKwik and you will get more yield and better looking results * Use withGun Foams Straw Foams Paints Adhesives Ground marking cans * It fits into any standard reciprocating saw.