Package Includes: There are 14 different sizes of hex heads in the package, namely 3/16", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16" , 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 12mm, various sizes for your needs. Material: This hex socket is made of chrome vanadium steel, and after heat treatment, it has high hardness, good wear resistance, corrosion resistance and more durability. Unique Design: This hex socket is marked by its size, which is convenient to find; it also has a storage box which is also very convenient for storage. Ease of Use: This hex socket is easy to assemble and disassemble, and it is not easy to fall off during use. The socket wrench socket set has a high level of waterproofness, strength and flexibility. Wide Range of Possible Uses: The hex socket is suitable for all common chucks on drills, screwdrivers and screwdrivers. Widely used in household goods, auto parts, woodworking, professional machinery maintenance, etc. : -This hex socket has complete specifications and is widely used. -Each hex socket has a visible size marker, you can quickly find the size you want. - This hex socket is suitable for pneumatic screwdrivers, electric screwdrivers, air drills, electric drills, deep hole drills, hand screwdrivers, etc. Specification : Material: Chrome Vanadium Steel Color: Gray Size: 3/16", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 5mm, 5.5mm, 6mm, 7mm, 8mm, 10 mm, 12 mm Quantity: 14 Pieces Package Includes: 14 Hex Drill Sleeve Notes: 1.Due to the different light and screen setting, the item's color may be slightly different from the pictures. 2.Please allow slight size difference due to different manual measurement. Shipping Quantity: 14 PCS/Set Product color: black Product size: diameter 6.35mm Note: manual measurement, please allow 1 - 3cm error!!! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.