These parts are the individual scissor mechanisms for the Early 13-inch MacBook. They are the white plastic keyboard parts that are found under the keycaps. Small scissors are $2. Medium scissors (Caps Lock, Tab, Delete, etc.) are $5. The shift keys and space bar each reqire two of the small scissors. THESE SCISSORS WILL NOT FIT YOUR KEYBOARD UNLESS IT HAS NUM-LOCK WRITTEN ON THE F6 KEY (top center of keyboard).