Description:Cat® Keys are used to create a no slip system that transmits torque between a shaft and its mating rotational component. Engineered for strength and universal functionality, Cat Keys are supplied in three basic shapes, square, rectangle and half round (Woodruff). We work closely with our Cat® certified suppliers to bring the highest quality Key’s not only to our production floor but also to our dedicated service network. Cat Keys are manufactured to precise specifications and are built for durability, reliability, and productivity. You can count on this Built For It product to help you get more done.Attributes:• Keys meet or exceed, ANSI, ASTM and DIN requirements• RoHS compliantApplication: • Used on shafts and works together as a system for maximum rotational torque.• Used on pulley hubs and power transmission systems. • A universal product for all machine and workshop applications throughout the world.