If you are unsure of which keyboard you have please click here. These parts are the individual keycaps for the 15-inch, and 17-inch MacBook Pros with silver keyboards. Thes keycaps are also used on the 15-inch and 17-inch G4 Aluminum PowerBooks, and some of the 12-inch PowerBook G4s. There are two types of keyboards used on the 12-inch PowerBook. Keycaps for the other version of the 12-inch Powerbook can be found here . In most cases keycaps are $3; high-demand keycaps (S, D, R, T, N ,M, L, Caps Lock, Shift, Tab, Delete, Return, and Command) cost $6; and very high-demand keycaps (A, E, and the Space Bar) cost $9. Scissors mechanisms (white parts under keycap) for these keyboards are sold separately here.