These 9mm replacement slide bowls are handmade by LA Pipes in Los Angeles California. These slide-bowls are design with a 9mm stem and fit all standard pull-stem bongs made by LA Pipes and others (most). The color handle allows you to pick the color of your choice, perhaps to match your bong. Get yourself a few replacement slides made from solid boro glass funnel shape bowl, with a color handle. Sadly, you know you're going to break them, so save on shipping and pick up a few.