These parts are the keycaps for the black 13-inch MacBook. They will not work with the other models. If your keyboard has a num-lock light on the F6 key, these keycaps are WRONG. In most cases, Small caps are $7.50; Medium (Caps Lock, Shift, Tab, and Return) are $15.00 and include the torsion bar; and the space bar (w/torsion bar) is $20.00. Scissors mechanisms (white parts under keycap) for these keyboards are available here.