The Ace 22 piece ball end hex key set is made The Ace 22-piece hex key set is made with S2 Steel that is heat-treated, quenched, and temThe Ace 22-piece ball end hex key set is manufactured using S2 Steel and treated with heat, quenching, and tempering for maximum strength, torque, and ductility, ensuring safety. The set is also coated with a rust-resistant finish.pered to ensure optimum strength, torque, and ductility. Additionally, it is coated with a rust-resistant finish to prolong the life of the tools.with S2 Steel that is heat treated, quenched and tempered for optimum strength, torque, and ductility for safety and coated with a rust resistant finish.

Product Features:

• A plastic holder firmly holds each key in a sized-marked hole so you always have the size you need at-hand
• The hex keys (allen wrenches) are used to drive internal hexagon socket (allen head) fasteners
• Long lasting