The W.W. Grainger Retaining 38DM66A 20mm Dia. Shaft External Snap Rings Pack of 50 are high-quality metal snap rings designed for securing shafts with a diameter of 20mm. Made by W.W. Grainger Inc., these snap rings come in a pack of 50 units, making them a convenient and efficient solution for various industrial applications. Perfect for businesses and professionals in need of reliable fastening hardware, these snap rings offer durability and functionality for secure shaft retention.