This is a 3D printable Spanner Wrench to allow easy replacement of worn seals on most, but not all, Lezyne pumps. Print this part, and install two 12.5 gauge finish nails.
Heat the nails with a soldering iron to get the heads flush. Trim the protruding part of the nails to about 1/4" (≈6mm), and the tool is ready to use.
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