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Cherry MX Mechanical 4-Key Tester: Blue Black Red Brown Switches : ID 4974 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Cherry MX Mechanical 4-Key Tester strip - test set of mechanical buttons - Adafruit 4974 Botland - Robotic Shop
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12 Cherry MX Switches Keyboard Tester Kit Clear Keycaps Sampler PCB Mechanical Keyboard Translucent Keycaps Testing Tool
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