PACKAGE CONTENTS: Includes 2 x 1/2 square to 1/4 hex socket adapters, enough for daily use. HIGH QUALITY MATERIAL: The wrench adapter a shock is made of high quality chrome vanadium steel, with oxide skin treatment to improve surface oxidation resistance, anti-corrosion and anti-rust, high hardness, strong impact resistance, and can be used for a long time. SECURE DESIGN: The adapter kit is designed to provide a secure locking system for existing tools and provide extra length to reach a variety of hard to reach spaces . Specially machined to securely mount hand screwdrivers, drills or impact wrenches. EASY INSTALLATION: The impact adapter is easy to install and can be done in a minute without any additional tool. The hex head adapter securely attaches to any 1/4" hex shank bit such as blade bits, screwdrivers, electric wrenches, ratchets, impact wrenches, etc. /p> APPLICATION: The quick release converter can easily replace the drill bit and socket, with stable clamping force, easy operation, and can be used with power tools. tiles, ceramics and other hand drill products.Ideal for mechanics, engineers, woodworkers or DIY enthusiasts. Hand drill adapter kit for glass, tiles, ceramics and other specialty products, perfect for machinists, engineers, carpenters or DIY enthusiasts Features: High strength, good durability, high impact resistance, easy to use Installation is very simple and no additional tools are required. First the self-locking head, insert the required bit, release it, and the self-locking sleeve will return to its original position for use. 1/4" square hex or 1/2", suitable for electric wrenches, air wrench series, widely used Convert a pneumatic or electric screwdriver into a drill or ratchet with this converter Chuck Specification: Material: Chrome Vanadium Steel Color: Black Size:< /p> Upper diameter: 1.8 cm Lower diameter: 2.3 cm Length: 5 cm Quantity: 2 Packing List: 2 X Socket Adapters