【Anonymous Shipping】uxcell Test Tube Caps Polyethylene PE Plastic Flange Type Plugs for Laboratory, Diameter 12mm, White Red, 100 Pieces Test tube caps are used as an excellent alternative to test tubes, with excellent sealing performance and ease of use, providing an excellent experience for research processes in the laboratory. Material: Polyethylene (PE) Total Size: 16 x 20.5mm (D*H) Suitable Tube Inner Diameter: 16mm Package Contents: 100 x Test Tube Caps Made of polyethylene, it is rust and corrosion resistant and highly durable. The flange design makes it easy to install and remove on most plastic test tubes. ⭐️ Although it is new and unused, it has been opened for inspection and photography, so it is listed as "like new". ⭐️ Free shipping ⭐️ Anonymous shipping using Mercari shipping I have various other items for sale. ↓ All items▶︎#HanaHana'sRecommendations ● Free shipping! ● Please contact us before rating if there are any problems. ● Stored at home Please understand and purchase. --------------------------------------------- 3-10