Feature: 1. [Hole Saw Drill Bit Set] The set includes 10 hole saws from 16mm to 54mm, 2 center drill bits, 2 hex wrench, and 1 aluminum box for easy storage and carrying. 2. [Wide Compatibility] This hole saw set is compatible with multiple devices such as hand electric drills, bench drills, suitable for various materials including stainless steel, aluminum alloy, iron, wood, plastic. 3. [3 Flute Design] 3 flute combination, sharply and hard wearing, ti plated drill bit integrated tooth tip, high concentricity, lightweight cutting, designed to increase heat dissipation. 4. [Efficient Chip Removal] Front and rear tilt angle design ensures effective chip removal, less likely to cause tooth breakage during cutting, ensuring longer working time. 5. [Center Drill Bit] The spiral slot center drill bit design ensures effective positioning and stability for precise and accurate drilling operations. Specification: Item Type: Carbide Hole Saw Set Material: Imported Carbide Specification: 16mm-54mm Compatible Device: Hand Electric Drills, Bench Drills Use: Suitable for perforating and expanding holes on materials such as iron, stainless steel, aluminum alloy, wood, plastic, etc. For example, installation of home appliances, drilling holes on bridge frames, door and window, construction materials, automotive sheet metal, aerospace vessels, etc.. Package List: 10 x Carbide Hole Saw (16mm-54mm)2 x Center Drill Bit 2 x Hex Wrench 1 x Aluminum Box