Feature 1Suitable for drilling of sheet metal, iron plate, aluminum plate, brass, wood, plastic, etc. 2It is suitable for workpieces with hardness below 28, such as steel plate, sheet metal, copper plate, and metal with thickness below 5MM. 3Using high speed steel materials, strong and durable, has a long service life. 4Including 3pcs step drill bits, different styles can meet needs, simple to operate. 5The drilling is accurate, the scale is clear, and the size is clear at a glance, which is very practical.Item Type: Step DrillMaterial: High-Speed SteelColor: As shown in the pictureShank Diameter: Approx.6mm / 0.24inWeight: Approx. 222g / 7.8ozApplication: Multi-function drill bit .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List3 x Step DrillNote1. Please allow 1‑2mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.