If you are unsure of which keyboard you have please click here. These parts are the individual scissor mechanisms (white parts under keycap) for the original and FireWire iBooks and Bronze PowerBooks(not the Wallstreet Ti or Ice Book). Function, arrow, letter, number and space bar scissors are $2 per set. Medium (Delete, Tab, Caps Lock, Shift, and Return) are $4. Make sure to specify which key the scissors are for -- there are slight differences.