If you are unsure of which keyboard you have please click here. These keycaps are will fit some of the Late 12-inch Aluminum G4 PowerBooks. These keycaps will not fit the other version of the keyboard. In most cases, Small caps are $3; Medium (Caps Lock, Shift, Tab, and Return) are $7.00 and include the torsion bar; and the space bar (w/torsion bar) is $10. Scissors mechanisms (white parts under keycap) for these keyboards are sold separately here.