Features: 1. Application: Specifically designed to fit Milwaukee type 3/8" cordless impact wrench. Does not fit Dewalt or other cordless tools. 2. Function: Use to replace your worn out retainer ring and O-Ring. 3. Superior Quality: All of the rings and O-rings are made of high quality rubber, durable and sturdy. Manufactured to the exact OEM dimensions. 4. Satisfaction Guarantee: If you are not satisfied with our products.You can request a full refund within 30 days to support a 12 month's warranty. Professional and sincere service allows you to purchase without risk ! Descriptions: .