Redragon custom pre-lubed switches made for DIY enthusiasts. 40gf work force. Unique clean sound by click. ,Approximate lifespan of 50 million times of keystroke. Compatible with MX style structure and fix most of keycap sets Type: Linear. Min trigger force:30gf min. End Force: 50gf max. Total Travel:3.30mm. Work travel: 2.0 mm +/- .5mm. Durability : 50 million clicks.