Description These retainer rings are used to hold sockets or other accessories on the anvil of an impact wrench. They are made of iron and rubber, not easy to break, and can withstand the high torque and impact forces generated by an impact wrench. Use them to upgrade your hand tools! Features -Color: As Shown-Material: Iron, rubber-Size: 1.34X1.34X0.20cm/0.53X0.53X0.08in-Size: 1.10X1.10X0.20cm/0.43X0.43X0.08in- Secure attachment: These retainer rings are designed to securely fix sockets with the combination of iron and rubber providing a strong and durable grip.- Sturdy construction: The iron and rubber construction of these retainer rings ensures that they are sturdy and durable, withstanding regular use.-Easy installation: These o-rings are easy to install and use. They can be easily threaded onto the square drive of the impact wrench.- Precise workmanship: These keyrings are manufactured with precise workmanship to ensure they fit snugly and securely, preventing slipping or other issues.- Sufficient quantity: These socket rings provide enough replacements for you to meet your needs, allowing your work to be carried out efficiently. Package list: 12 x iron rings 12 x rubber rings