The Motor Key Stock is made out of hardened steel. The stock comes in bags of 10, 25, and 50 to purchase. The square stock measures 1 1/4″ long by 3/16″ wide, and 3/16″ high. Weighs .01 pounds per stock. Great for items needing a keystone square stock piece like lawnmower tires, pulleys, motors, and other applications requiring a key stock. The keystone stocks ship directly from BH-USA.