Features Premium Metal Material: Impact driver socket adapter is made of chrome vanadium steel material, durable with strong impact. Flexible and Convenient: The angle can be rotated, bring strong magnetic attraction, flexible and convenient, plug and play, easy to use. Widely be Used: Impact flip socket set is suitable for screw socket fastening at special angles and is widely used in life. Universal Size: The socket length is 88mm, the outer diameter of the post is 1/4in, and the inner diameter of the socket is 1/4in, 3/8in, 5/16in respectively. Convenient and Practical: Impact flip socket come with stable structure, excellent performance and long service life, very practical. Specification: Item Type: Impact Driver Socket Adapter Material: Chrome vanadium steel Socket Length: Approx. 88mm / 3.46in Socket Inner Diameter: 1/4in, 3/8in, 5/16in Post Outer Diameter: 1/4in Package List: 3 x Impact Driver Socket Adapter Note: Pay attention to safety protection when using. Package List 3 x Impact Driver Socket Adapter