Do you want a kind of professional retaining ring for your wrench socket? Do you want to keep wrench retainer ring supported? This can be your . Really practical and useful, just install it into your wrench. This O-ring is made from reliable rubber materials, which is durable and not easy to break. Features -Color:Black -Material:Iron, rubber -Size:1.34X1.34X0.20cm/0.53X0.53X0.08in(metal ring) -Size:1.10X1.10X0.20cm/0.43X0.43X0.08in(rubbrt ring) - Scientific design, high strength, high hardness, and excellent durability, the wrench rubber rings will easily meet your needs. - workmanship, reasonable structure, professional and practical, impact friction rings can bring you convenience. - This O-ring is made from reliable and sturdy rubber materials, which is durable and not easy to break for a longtime. - The retaining ring is made of iron material, which is very durable and wear-resistant, with smooth surface, safe to your hands. - Using workmanship, these wrench retainer rings are simple and very practical in use, brings you convenience. Package list: 25 x retaining rings 25 x rubber rings