Product Review

Features:
Product is compact and easy to carry. Used in automotive industry, household maintenance, manufacturing industry,construction and other industries.
The spring loaded pins move to fit most screw in fasteners; hexagonal and square nuts and bolts, hooks, wing nuts, and more, even damaged and rusted fasteners that your other tools can't get a grip on.
Doesn't matter if it's metric or imperial, it will fit most fasteners between 7mm(1/4") and 19mm(3/4"), and you can use your socket wrench or Power drill with the supplied 3/8"adapter

Specifications:
Using range: Fits from 7mm(1/4") up to 19mm(3/4") wide
The square hole size at the back of the universal socket is 3/8" .
Material: Chrome Vanadium Steel，Internally by 54 high-carbon steel hardness pole constituted
Color: Blue
Material: Chrome Vanadium Steel
Length:52*26mm
Net Weight: 163g

Package Includes:
1pc Universal Socket and comes with a 3/8"adapter for Power drills