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Great White North Vaporizer Company 14mm Female to Female Vaporizer Adapter
Adapters are Cheaper Than New Glass These adapters will allow you to use two male joints together.  The adapters are sturdy and approximately 2.5" tall, and will work with your favorite water piece and vaporizer adapter.  Two Sizes Fit Your Needs To attach two 14mm male pieces, select the 14mm Female to 14mm Female Adapter. To attach one 14mm male and one 18mm male piece, select the 14mm Female to 18mm Female Adapter.
$14.99