[Packaging]:Using a PVC plastic 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 feel|Operation Force:45gf; Return Force:=15gf;Conduction Travel:1.8±0.3mm;Total Travel:3.6±0.3mm;Operating life:100million Cycles(min). [Compatibility]:Compatible for RGB/SMD/LED hot swappable;Compatible with most hot swappable mechanical gaming keyboard & backlit keyboard. [Feature]: Mechanical shaft;High compatibility Cross guide core and 5-pin design;Box structure;. [High Quality]: Kailh Jellyfish switch with the box structure,Transparent throughout the shaft body;With high stability,crisp sound;Super long life with 100million cycles.