The EZ Loads are supposed to be the equivalent to 50 grains of powder. Goex discontinued those, but I heard that someone had bought Pinnacle.
Either way, they were made by American Pioneer Powder company for Goex, just like Shockey's Gold and Gold Sticks.
That powder is known to be very hygroscopic, so keep them sealed well. If they absorb moisture, they have been known to come out the barrel like solid rocket fuel. Be careful not to start a fire.