EZ-Ject herbicide shells control dozens of varieties of trees and woody vegetation. Shells are packaged 25 to a tube with 48 tubes contained in each 1200 shell box. You load the shells into EZ-Ject Lance, screw on the end cap and begin injecting. The lance shaft contains four chambers into which shells are loaded. And fully loaded, the lance weighs less than ten pounds. You can use it year-around, unless the bark is frozen to the point of preventing shell penetration. And you can use it in all weather conditions, including rain. For more information, click here.