This replacement wrench ring set is made from premium rubber material, designed for lasting use. These O-rings offer high durability and are resistant to deformation and breakage. The set helps your wrench operate more smoothly and enhances overall performance. Features: - Color: As shown - Material: Iron, rubber - Size: 1.34 x 1.34 x 0.20 cm, 1.10 x 1.10 x 0.20 cm / 0.53 x 0.53 x 0.08 in, 0.43 x 0.43 x 0.08 in - Rubber ring supports the retaining ring; both may wear over time with use - Easy to install: Place the O-ring first, then install the impact wrench sleeve retaining ring, and secure to the appropriate size using pliers - Compatible with most electric and air wrenches with 12.5 mm square drive - Scientific design provides high strength, high hardness, and excellent durability to meet your needs - Precision craftsmanship with a durable structure; practical and professional-grade friction rings for reliable performance Packing list: 12 x retaining rings 12 x rubber rings