This keycap set contain 109pcs pbt backlit keycaps and 1pcs key puller It can fit most Standard US layout 61/ 87 TKL / 104 / 108 mx switches mechanical keyboards Excellent double shot craftsmanship, shine through the keycaps no light leakage The height is OEM profile, the thickness is about 1.4mm Note: Some non standard US layout mechanical keyboards can't use this keyset. Because the size of the space bar / enter key / shfit key and win keys are different. You also can confirm with us, if you are not sure the keycaps size of your keyboard