20mm Smooth Push and Turn Flat Plastic CR PCR Caps For Glass Tubes - Matte Black - 400/Box

The 20mm Smooth Push Down and Turn plastic caps come with everything you need to make a regular jar fit for storing and preserving goods. The sturdy construction of the caps is made of a reliable plastic. To guarantee product preservation, the cap is reinforced with a foam liner to make it as airtight and leak-proof as possible. Furthermore, tests have shown that the push-down and turn-lock mechanisms of these lids are child-resistant in terms of compliance.