Featuring materials, these friction clips and O-ring provide excellent resistance to wear and tear, making them suitable for demanding environments. Their compact design ensures compatibility with various wrench models, while their secure grip helps users achieve precise torque application, improving overall work accuracy. Features -Color:Black -Material:Iron, rubber -Size:1.34X1.34X0.20cm/0.53X0.53X0.08in(inner diameter: 11.3mm) -Size:1.10X1.10X0.20cm/0.43X0.43X0.08in(inner diameter:7mm) -Reliable rubber o ring: these o ring are made from rubber, providing dependable performance and resistance to breaking -Robust iron retaining rings: constructed from iron, the retaining rings are stable, strong, and wear resistant for long term use -Plentiful quantity: the set includes a large number of rings, ensuring you have enough to replace worn out rings whenever necessary -Effortless installation: first, install the rubber o ring, then the impact wrench socket retaining ring, and use pliers to adjust to the proper size -Versatile application: this kit is compatible with most electric and pneumatic wrenches with 1/2" square drive, making it highly versatile Package list: 36 x Rubber o ring 36 x Impact Wrench Socket Retainer Ring