A simple yet essential component designed for a secure and airtight fit. Crafted with precision, it ensures a seamless connection between components, enhancing the overall efficiency of your smoking setup.

These standard rubber grommets are stiffer making them more forgiving than their silicone cousins. They can sometimes fix leaking issues especially where the hole is not a perfect flat circle.

Product Specifications:

• Designed to fit a 21mm hole to support a standard 15mm diameter BONZA stem.