Straight Inlet Adapter with Hose Barb Vacuum Purge 3 Neck Heavy Wall Round Outlet Size:24 40 3 Neck Heavy Wall Round Bottom Flask USA Made BVV™ ULTRA High Purity Lab Grade N Heptane is a perfect solution for cleaning up and clarifying the extracted material and removing the green colored plant material and some waxes out of the product to produce a cleaner end result when distilling extracts This straight inlet adapter allows the user to connect a male and female 24 40 jointed connection and attached a flexible hose for vacuum if needed **Glassware Safety Disclaimer: BVV™ is not responsible for failure of glassware which must be inspected before and after every use because it may eventually develop imperfections or damage through normal usage