A boss head rectangular aluminum is a laboratory apparatus used to attach and hold laboratory equipment, such as clamps, rings, and holders, to a laboratory stand or support rod. It consists of an aluminum body with a rectangular shape and a threaded screw mechanism that can be tightened or loosened to secure the laboratory equipment in place. The boss head is typically attached to a laboratory stand or support rod using a separate holder or adapter.

Once attached, laboratory equipment can be inserted into the boss head and held securely in place during the experiment. The rectangular shape of the boss head allows for more precise positioning of laboratory equipment, as it can be adjusted in both the vertical and horizontal planes. The aluminum construction of the boss head makes it lightweight and easy to handle, while still providing strong and secure support for the laboratory equipment. The boss head rectangular aluminum is commonly used in chemistry and biology experiments to hold equipment in place, allowing for precise measurements and observations.