This assortment of square key stock includes 20 pieces in sizes from 1/8" to 3/4", each measuring 12" in length. Constructed from durable zinc-plated steel, these key stocks are ideal for securing gears, pulleys, and other machinery components. Packaged in a convenient 6-hole metal parts box, this collection provides versatility and easy access for your fastener needs in various industrial applications. Perfect for maintenance and repair tasks, these high-quality key stocks ensure reliability and performance.