Features:* Replacement sPiral Step Drill Bit Fits for handheld pocket system.* Drill bit for use with pocket carpentry.* Drilling stable, high efficiency, wall hole is smooth and chip evacuation unobstructed.* Polished surface finish, good finish.* Chip removed quickly, fast drill hole.* Mainly used for wood, MDF, MDF, chipboard opening hole.* The bit is suitable for wood drilling, plastic, mild metal aluminum and iron, etc.* Designed for sliding door frame opening, door frame processing, door liring processing, iron products, aluminum alloy, wood, light alloy processing. Specifications:Product Name: Spiral Step Drill Material: HSSColor: GoldOptional Size: 8-4mm, 9-5mm, 10-5mm, 10-6mm, 12-8mm, 5pcs/setSuitable for: Drilling HoleQuantity: 1pc/5pcsPackage Contents:1# Package: 1Pc Spiral Step Drill Bit2# Package: 5pcs/set Spiral Step DrillNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.