[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 feel|Operating force:45gf;Rerurn force:=35gf;Conduction Travel:1.8±0.4mm;Total travel:3.6±0.3mm;Light transmittance:=90%;Operating life:80 millions Cycles(min). [Compatibility]: Compatible with most mechanical hot-swap keyboards and SMD/RGB LED keyboard. [Feature]: The transmittance of the light guide column reaches 90%;POM material Guide core and Base;Military grade alloy contacts;Exquisite and cute appearance&Stronger return force. [High Quality]:Kailh box switch Red Pudding has powerful pressing feel;Super long life-over 80 million cycles;IP56 Double Dust&waterproof.