The ASSORTMENT- RETAINING RINGS includes 430 pieces of high-quality internal and external rings, ranging from 1/4 inch to 1 inch. This kit features 25 each of external rings, ensuring you have the right size for a variety of applications. Designed for durability and reliability, these retaining rings are essential for securing components in automotive and industrial settings. Ideal for maintenance professionals and manufacturers, this assortment provides a convenient solution for all your fastening needs.