Totally 20 Pieces: Originally made by Cherry in Germany and Repacked by Granvela in China. For DIY Replacing Mechanical Keyboard Switches, or Trial Use. BLUE SWITCHES FEATURES: tactile bump and louder high-pitched audible clicking. Great fun of typing faster by feeling the bump instead of pushing the keys all the way down. Have a lighter overall feel for intensive data entry and gaming. Ideal for fast type-writers and professional gaming.Blue Switches: Compatible games and Office Mechanical touch: two-stage, sense of the paragraph Key sound:crisp sound. Tactile Bump and Louder Audible clicking Specifications: Acturation force 60g Click life:40 million operations ;Trigger travel: 2.4mm.. Package Includes: 20 Switches, 1 Switch puller, 1 clear protective plastic case.