Universal keycaps with standard and non-standard bottom row key sets to fit most mechanical keyboards and optical keyboards 147-key set with US ANSI standard layout that works on all full-size, tenkeyless, and 60% mini keyboards, includes additional sets of alternate bottom-row keys to accommodate the widest range of mechanical keyboards Non-translucent font glass keycaps, with lights to make the RBG lighting effect of the mechanical keyboard more dazzling High-quality double-heated PBT material with a tough, textured finish, extra-thick walls providing maximum durability and solid keystrokes Improved the arch and finger contact area of the key to offer more comfortable typing, the included key puller makes it easy to remove any key with ease and flexibility. Note: Keyboards are for display only, not for sale