The Key 1/4 x 1/4 x 2-1/4 Form A is a precision-engineered component made from high-quality carbon steel, designed for optimal performance in mechanical assemblies. Measuring 1/4 inch in width, 1/4 inch in height, and 2-1/4 inches in length, this key is perfect for securing gears and pulleys in various machinery. Its standard form A design ensures compatibility with a wide range of applications, making it an essential part for engineers and maintenance professionals. The key's surface is finished to prevent wear and corrosion, ensuring a long service life.