Features Made of chrome-vanadium steel, entirely heat-treated, with high hardness and good toughness. The surface of the bit seat is sandblasted, which is not easy to rust and is more beautiful. It is widely used in the construction industry, manufacturing industry, home appliance maintenance, automobile maintenance, etc. Equipped with a storage box, it is convenient to store and carry, and the drill is not easy to lose. The extension rod design can repair problematic workpieces in a small space that is not easily accessible by hands. Feature: Made of chrome-vanadium steel, entirely heat-treated, with high hardness and good toughness. The surface of the bit seat is sandblasted, which is not easy to rust and is more beautiful. It is widely used in the construction industry, manufacturing industry, home appliance maintenance, automobile maintenance, etc. Equipped with a storage box, it is convenient to store and carry, and the drill is not easy to lose. The extension rod design can repair problematic workpieces in a small space that is not easily accessible by hands. Specification: Material: Chrome vanadium steel Production process: Overall heat treatment Surface treatment: Abrasive blasting Length: 110mm / 4.3in Square bit socket: 3/8 Hex bit socket: 1/8, 3/16, 7/32, 1/4, 9/32, 5/16, 3/8 Package list: 7 * Bit socket Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product. Package List