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  1. Jgrden

    Backyard Engineering Fountain Pen Desk Set

    A three stage fountain pen delivery system. The tower tilts and lays nearly flat. The tracktor moves the launch pad back for forth. There are three led lights for appearance. Three battery compartments are built in. One is 9 v, other is 4.5 v and the last is 3 v. the pen is 24 g plate...
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