[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. The packaging box can be recycled and has a delicate appearance, allowing for daily storage of switches. [Product parameters]:Operation Force:50±15gf; Return Force:=15gf;Bottom out force:53gf;Conduction travel:1.8±0.4mm;Total Travel:3.6±0.3mm. [Compatibility]:Compatible for RGB/SMD/LED hot swappable; Compatiblewith most hot swappable mechanical gaming keyboards or custom built keyboard. [Feature]: Mechanical shaft; Cross guide core design; Featured PC meterials for covers and shaft;Spring grows by 2mm with high rebound. [High Quality]: Kailh Switch Summer with 5-pin has high stability, crisp sound;Super long life with over 80 million cycles; Double dustproof & IP56 waterproof.