Feature: 1. ADJUSTABLE SOCKET WRENCH: Unlike restrictive pin sockets, universal socket wrenches handle high torsion with ease, firmly and correctly clamping any nuts and bolts within their continuously adjustable size range 2. DURABLE AND PRACTICAL: Universal socket maintain equal force on all sides of the fastener relative to the rounded corners. Durable enough to retract into the shape of most objects 3. APPLICABLE SCENARIO: Adjustable drive socket make it easy to clamp and remove damaged, rounded and rusted nuts and bolts. Can be used in the automobile industry, home repair, manufacturing, construction and other industries 4. ADJUSTABLE WIDTH: Replaceable 30 + sockets, from 3/8in to 3/4in and 10 to 19 mm. The special self adjustment of this universal socket can be adapted to any size or shape 5. APPLICABLE OBJECT: The drive wrench socket adjusts immediately to grab most nuts, screws, hooks, square screws, bolt heads and other odd shaped fasteners for which you do not have the right tool 6. ONE HAND OPERATION: Multifunctional socket wrenches facilitate one handed operation and can save you time and money in constantly changing between multiple tools and sizes, freeing up a lot of space Specification: Item Type: Adjustable Drive Socket Material: Alloy steel Applicable Hex Screw Size: Approx. 10 ~ 19mm / 0.39 ~ 0.75in Applicable Driver Wrench Size: 3/8in(convertible head available). Package List: 1 x Adjustable Drive Socket