I just saw one of these. Old hippy guy had it and his had a small spring on the side where the pipe goes. When you turn the top it pops the one hitter out like a toaster lol.I had a couple one hit brass pipes. I remember you could get the wooden box where the pipe went on one side and the other side held your weed. Just slide the top, take out the pipe, slide the top to expose the weed side, and pack the pipe down into the weed