Feature:1. The socket adapter is integrally formed, with glossy exterior without burrs, and smoother installation.2. Made of highcarbon steel material, has good wear resistance and toughness, and has a long service life.3. The exterior of the adapter is coated with anticorrosion paint, which not only improves the smoothness but also is more durable.4. The socket adapter has standard size, tight connection, and is not easy to fall off when installed on a hand tool.5. Mainly used to assist the ratchet wrench to tighten the screws and is an indispensable tool in industrial manufacturing.Specification:Item Type: Socket AdapterMaterial: High carbon steelHead Length: Approx. 12.5mm / 0.5inInner Diameter: Approx. 9.5mm / 0.4inOuter Diameter: Approx. 18mm / 0.7inTotal Length: Approx. 36.7mm / 1.4in.Package List:3 x Socket Adapter