Following are examples of three metamorphic rocks and a list of their uses. Marble is a metamorphic rock that is used to make floor tiles, counter tops and it is carved into statues and was used extensively in the building of the Roman Colosseum and other historic buildings. Slate is another metamâ¦.
A hex key, Allen key or Allen wrench is a tool of hexagonal cross-section used to drive bolts and screws that have a hexagonal socket in the head (internal-wrenching hexagon drive).
Color Hex Code. A color hex code is a way of specifying color using hexadecimal values. The code itself is a hex triplet, which represents three separate values that specify the levels of the component colors. The code starts with a pound sign (#) and is followed by six hex values or three hex value pairs (for example, #AFD645).