Spark plug clamps are used to hold and install spark plugs in engines. It is an indispensable tool for auto mechanics and hobbyists. This type of design is far superior to others in its durability and ability to maintain accurate torque. All replacement clamp heads are made from a single piece of alloy steel, ensuring high quality and durability. The studded design provides an exceptionally strong connection and allows the heads to be completely interchanged between each other depending on the desired torque range. Spark plug clamps are a reliable and durable tool that will help you tackle any automotive repair or maintenance task.