1、SPECIFICATIONS: Deep socket assortment set, internal concave hex drive, with 16 different specifications to meet different usage needs. 2、HEX SHANK: These sockets have universal hex shank, the slot design ensures stable clamping, and the deep sockets for easy nut insertion. 3、APPLICABLE TOOLS: These hex drive sockets can be used for electric drill, bench drill, air driver, electric wrench, etc., easy to install and disassemble. 4、EXCELLENT METAL: Made of chrome vanadium steel, with high hardness and wear resistance, heat processing finish, waterproof and rustproof. 5、WIDE APPLICATION: This socket assortment set is suitable for automotive maintenance, home repair, manufacturing industry, construction projects, etc.