Kailh Mechanical Key Switches - Linear Red - 10 pack [Cherry MX Red Compatible] : ID 4952 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Kailh Box Mechanical Switches for MX Mechanical Gaming Keyboard | 50g Force | Linear | Plate Mounted | SMD 3 Pin RGB Switches for Backlit Keyboard | (65 PCS, Red): Amazon.com: Industrial & Scientific