Reusable Empty Caulk Tube Refillable Caulking Cartridge

I believe these to be the worlds first truly reusable caulk tubes. HDPE caulk tube / cartridge 6 plungers. Quantity (3) The top is separate from the cartridge, allowing it to be removed for cleaning. Note: These have NOT been tested or certified for food safety, and have not been sterilized.