If you are unsure of which keyboard you have please click here. These parts are the individual keycaps for the G3 Dual USB iBooks. In most cases, Small caps are $2; Medium (Caps Lock, Shift, and Return) are $4 and include the torsion bar; The space bar (w/torsion bar) is $6. Scissors mechanisms (white parts under keycap) for these keyboards are sold separately here.