14mm Hvy Glass replacement bong bowls. These are the same high-quality slides that come with each HVY Glass Bong, Bubbler or Water Pipe. Each replacement slide features a one-hole push bowl that is the perfect size for smoking flower and is made from extra-thick boro glass. Each 14mm HVY Glass Slide and fits most standard 14mm female bong, bubbler or rig joints. Attached to the herb bowl is a wide Maria-style handle for easy handling and to prevent the glass slide from rolling unexpectedly.