【Strong compatibility】 This impact sleeve kit is suitable for the heavy impact quality of 1/2-inch drive impact tools. Each socket has a drill bit to position the retaining ball bearing on most circuit breaker and impact wrenches to ensure a safe and seinstallation 【Complete tools】 This 9-piece wheel nut hex socket set, each includes 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, 36mm, 38mm. Sleeves of different sizes can fully meet your various needs and are worth buying 【Rugged and durable】 This sleeve set is made of 40 chrome steel and has been heat ed, which has higher strength and durability. This is a professional tool that has been hardened and tempered. It can be used for commercial or occasional use and can bring you satisfaction 【Portable】 All parts of this kit are packed and packed in a plastic box to facilitate storage and carrying, and meet your different needs for maintenance work. It is more convenient for you to work away from home and store at home, convenient and practical, trustworthy 【Service】 We guarantee that our products are of reliable quality and can meet your needs. If you have any questions about our products, please feel to contact us. Our helpful customer support team will handle it for you within 24 hours, don’t worry about refunds and returns