The Hi-Pro Machine Key measures 3/16 x 3/4 inches and is crafted from durable carbon steel, ensuring reliable performance in various mechanical applications. This key is designed to fit standard keyways, providing a secure fit for shafts and pulleys. With its robust construction, it meets industry standards for strength and durability, making it ideal for use in machinery and equipment requiring precise alignment. The carbon steel material offers excellent resistance to wear and tear, ensuring longevity in demanding environments.