If you are unsure of which keyboard you have please click here. These parts are the individual keycaps for the original and FireWire iBooks (not the Ice Book). Small caps are $2. Medium sized ones (Delete, Tab, Caps Lock, Shift, and Return) are $4 and include the torsion bar. The space bar (w/torsion bar) is $8. Scissors mechanisms (white parts under keycap) for these keyboards are available here.