Features: 1[Durable Material] Made of chrome tangsten steel material which is durable wear resistant and can be used for a long time. 2[High Strength] After heat treatment sleeve shaft adapter has high strength and durability so you can use it with confidence. 3[With A Plastic Box] This socket adapter equipped with a plastic box for easy storage transportation and use. 4[Specifications] Drive impact adapter is exquisite in workmanship and the product specifications are 1 3/4 1/2 3/8 1/4 which can meet your various needs. 5[Widely Application] Widely used in a variety of situations such as home maintenance car maintenance equipment installation etc. Specification: Item Type: Socket AdapterMaterial: Chrome tangsten steel plasticProduct Specifications: 1 3/4 1/2 3/8 1/4Application: Home maintenance car maintenanceWeight: Approx. 600g / 21.2oz Package List: 6 xSocket Adapter1 x Plastic Box