Feature:1. 45# Steel: Wrench is Made of 45# steel, upgraded and thickened high hard torsion bar to withstand large torsion2. Alloy Drill Teeth: This is wrench, which has high accuracy alloy drill teeth, durable, portable, compact and mini3. Perforated Design: Adopt perforated design, easy to the line, special process and deep rust prevention4. Strong Practicability: This is multi functional wrench with strong practicability, high hardness, wear resistance and long life5. Wide Range of Applications: This drill chuck wrench is more widely used, matching a variety of power toolsSpecification:Item Type: 4 in 1 Drill Chuck WrenchMaterial: 45# Steel Package List:1 x Drill Chuck Wrench