Rear 20mm casing screw, Grade-A
Grade-A means that although used, this part is in excellent condition for it's age and if there are any cosmetic blemishes, they will be very minor.
Single rear 20mm hex head casing screw for all models of 12" and 14" dual USB iBook G3s. There are two of these screws at the back of the bottom case. This can be tightened with a T8 torx driver.
These are used parts taken from a recycled iBook G3