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It's important to note that Volcano Hybrid Air Filter Cap is only compatible with the Volcano Hybrid. However, you can use it with other Storz & Bickel vaporizers. If you're in search of an air filter cap for the Volcano Classic or Volcano Digit, you should check out a different product. For more Storz & Bickel accessories, please feel free to browse our full lineup of products. Order from our online headshop!