The G L Huyett Key 5/8 x 5/8 x 3-1/2 Form B is crafted from carbon steel, providing strength and durability for various mechanical applications. Measuring 5/8 inch in width and 3-1/2 inches in length, this key is designed for Form B specifications, ensuring a precise fit in assemblies. Its robust construction makes it ideal for use in automotive, machinery, and construction projects. The key's reliable performance and strength are essential for maintaining the integrity of your equipment, making it a valuable addition to your toolkit.