Rubber Scroll Wheel - made out of rubber because it's comfortable to use and creates friction with your fingers. It is quite thick material and is therefore quite durable.
Mouse Cable - polythylene plastic casing which has wires inside it. These wires are made out of metal so they can receive signals.<br>http://flylib.com/books/en/220.127.116.11/1/
Internal mouse buttons - made out of plastic because it is cheap and quite durable. Type of plastic: Acrylonitrile Butadiene Styrene.<br>
Bottom half of casing - made out of Acrylonitrile butadiene styrene plastic because it's economical to make and highly durable (it lasts 3+ years and doesn't crack when you drop it on the floor. It is also hard, so when you press down on it, it doesn't bend or distort.
Screws - made out of steel so that they don't bend when they are inserted into the product. These are used to hold the different components of the mouse together.
Top half of casing - made out of Acrylonitrile butadiene styrene (see bottom half of casing for description).
External mouse buttons - made out of plastic because it is cheap and quite durable. Also, it is an easy material to handle. Type of plastic: Acrylonitrile Butadiene Styrene.
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