If you are unsure of which keyboard you have please click here. These parts are the individual keycaps for the 12-inch, 15-inch, 17-inch G4 Aluminum PowerBooks, and the 15-inch and 17-inch MacBook Pro. The original manufacturer randomly used two types of keyboards in the 12-inch Aluminum PowerBooks. These will fit some of the 12-inch Aluminum keyboards, and they will not fit others. Keycaps for the other version of the keycaps can be found here . In most cases, small caps are $7.50; larger keycaps (Caps Lock, Shift, Tab, Delete, and Return) are $15.00, and include the torsion bar; and the space bar (w/torsion bar) is $15. Scissors mechanisms (white parts under keycap) for these keyboards are NOT included. If you need scissors, you can purchase them here.