ZHUSHANG SHUANGX New 2 inch (OD54mm) 99.9 percent Red Copper Bubble Plate Fit for 2 inch Distillation Column Home Distillation, Reflux Column : Amazon.ca: Industrial & Scientific
YUEWO 2" Copper Bubble Plate Set with Double Card Slot Silicone Gasket for 2" Glass Distillation Column : Amazon.ca: Home
2 Inch Copper Bubble Cap Plate. Includes Bubble Plate Gasket - Mile Hi Distilling
New Type 3" Distillation Lens Column with 5pcs Copper Bubble Plate Sets, Tri-Clamp Sight Glass Union Stainless Steel 304 (Size : Set 5) : Amazon.ca: Tools & Home Improvement