Gateron Optical Yellow - Linear 1mm Pre-Travel 3.2mm Total Travel 35g Actuation For Hot Swap Optical Mechanical Gaming Keyboards & DIY Custom Keyboards. Linear: for fast, responsive gaming ; used by some of the world's best gamers Optical switches ; 1-pin design ; Compatible with Optical PCB Only; Plate Mounted Rated for 100 M Actuation. Switch Remover / Puller Included!