Comprehensive Kit Includes: 3/8-inch impact wrench retainer rings and O-rings, along with a specialized anvil installation tool, ensuring you have everything needed for setup and maintenance of your tool. Universal Compatibility: Designed to fit standard 3/8-inch impact wrenches, providing a reliable and secure fit for both electric and pneumatic models. Optimal Material and Design: Made from rubber, the retainer rings and O-rings are built to withstand rigorous use in professional or home environments, ensuring longevity and performance. Easy Installation Process: The kit includes an anvil installation tool that simplifies the process. Place the retaining ring into the tool’s recess, insert the anvil at a 45° angle, then straighten to secure the components. Versatile Use: Ideal for both electric and pneumatic 3/8-inch square drive wrenches, this kit ensures proper fit and function for a wide range of applications. Color: Black Material: Rubber Package Contents: 20 x O-rings and retaining rings, 1 x installation tool Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.