This is the same launching mechanism that's included in the Single Stage Starter Kit but without the tripod base. This is useful if you're interested in creating your own launching pad, or if you want to launch several rockets simultaneously for competitive events from your own launching pad, or for grouping rockets together to create your own multi engine boosters! All that's required to mount the launcher is a ½ inch diameter hole through a base of your choosing. Comes complete with fueling line, launching lanyard, safety clip, and assembly instructions.