Feature: 1. INCLUDED TOOLS: Includes hex shank centering drill bit, inner hole opener, and countersunk hole opener. Used together for efficient and convenient operation. 2. BORDERLESS DESIGN: Features a borderless edge design that allows for smoother cutting, quick chip removal, and improved drilling efficiency. 3. ALLOY STEEL: Made of alloy steel material, offering high hardness, wear resistance, excellent cutting performance, and strong perforation capability. 4. EFFICIENT CUTTING: Alloy steel teeth combined with a non-bonded edge design ensure smooth operation of the hole saw blade, delivering clean and fast cuts. 5. SAFE OPERATION: The spring-loaded drill bit automatically ejects the pilot disc once the hole is complete, enhancing user safety. Specification: Item Type: Spotlight Hole Opener Material: Alloy Steel Color: Green, Black Application: Suitable for gypsum board, wood board, and other thin wooden materials. Package List: 1 x Positioning Center Drill Bit 1 x Inner Hole Opener 1 x Countersunk Hole Opener