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4x4 MX Switch Tester Board
A 16-switch tester block for mechanical keyboard builders. It has 14.1 mm square cutouts on the standard 19.05 mm key pitch, and a 1.5 mm plate lip so MX-style switches snap in and out without soldering. There is a 16 mm relief pocket under each switch to clear the clips and pins, so you can compare switches side by side before buying a full set. The block is 86 x 86 x 14 mm.
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