| Specification | Inner diameter | Inner height | Style |
20mm aluminum plastic cap | 20.3mm | 7.5mm | flange top/flat top/flip off/tear off/circle cut |
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| 20mm aluminum plastic caps | Flange top aluminum plastic cap |
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| Flat top aluminum plastic cap | Flip off aluminum plastic cap-6 petal shaped |
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| Flip off aluminum plastic cap-6 bridge shaped | Tear off aluminum plastice cap-rotated top |
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| Tear off aluminum plastice cap-positioned top | Circle cut aluminum plastice cap |
