10 Pieces 10.16 cm Silicone Rubber Tube Lower Shank Bar 14 Mm Female Head to 18 Mm Male Head Bowl (Translucent White) https://www.amazon.com/dp/B094ZWP33G/ref=cm_sw_r_apan_glt_fabc_MT2NFF13M75MFKMNMZSZ?_encoding=UTF8&psc=1
4 Pack 4.5Inch Stem Clear Scientific Glass Tube Adapter, 18mm x 14mm https://www.amazon.com/dp/B09133N6T2/ref=cm_sw_r_apan_glt_fabc_NFDE545JJNE98KDD789T