The socket fits nuts from 1/4 to 3/4 (from 7 to 19mm). No more searching for the right key size or shape, this universal adapter is easy to carry and fits all shapes. This unique key is made of 54 pins, advanced spring, not easy to deform, in order to adapt to all sizes of bolts and nuts, prefer saving space and money thanks to this universal ratchet. This high quality universal cover is made of Chromoly steel, which are characterized by the highest strength and to provide you with a reliable and durable tool for efficient and practical application applications. Ideal for the automotive industry, appliance repair, manufcture, construction and others industries, or when you want to loosen screws, nuts, hooks and other fasteners. It is completely perfect for your toolbox. Contents: 2 Universal ratchet 7-19mm + 2 3/8 adapter for multi-function drill.