[Packaging]:Using a PVC plastic packaging box, and placing every switch separately which can better protect the shaft body from damage and prevent pins from bending;Note:Switch Opener is not include. [Product parameters]:Linear | Operation Force:50gf;Conduction Travel:1.7±0.3mm;Total Travel:3.6±0.3mm;Operating life:70 millions Cycles(min). [Compatibility]:Compatible for 3 Pin RGB/SMD hot swappable;Compatible with most hot swappable mechanical gaming keyboards. [Feature]: Mechanical shaft;Cross guide core;The bump is smooth and decently strong,and has a slight curve to it when starting out. [High Quality]:Kailh Pro series mechanical keyboard switches;Long life with 70million cycles.