Our Bonza Silicone Black Grommet is the perfect addition to support your bonza 10mm diameter stem. Designed to fit snugly into a 13mm hole, this silicone grommet ensures a secure and stable connection, enhancing your smoking setup. Elevate your bonza experience with the reliability and durability of our black silicone grommet.

Product Specifications:

• Designed to fit a 13mm hole to support a standard 10mm diameter STANDARD stem.
• Material: Silicone