Lineing screw packers are used in loading pots, screw screwers are also used to anchor objects to a wall. They come in different types of screws and sizes, such as screwdrivers, loading pots, and screwdriver packers that come in different types of screws and nuts.
Screw packers are usually used for metal purposes, such as loading and unloading screws into a container. Plastic screw packers are usually used for plastic or brass, and can be used to store laminated materials such as screws and tapes.