Trick up your bong and take it to the next level with this versatile external chamber / ash catcher. Enhancing your smoking experience by removing ash and loose particles before they enter your bong. Add water & a stem and you have an external water chamber.
With 18mm ground joint connector to fit in any bong or stem that supports an 18mm glass cone and a Bonza 15mm diameter hole with bonza grommet so you can add the stem of your choice. 

Product Specifications:

• Height: 120mm
• Diameter: 50mm
• 18mm male ground joint connector arm
• 18mm female ground joint for cone