Description: Versatile Drill Bit Set: This set includes 6 pieces of step drill bit, fit for a wide range of applications. Designed to fit most electric drill, these bits are ideal for creating clean and accurate holes in various materials Sturdy Construction: Crafted from quality metal, these drill bit are built to last. The titanium coating enhances durability and provides great resistance to wear and tear, ensuring long term performance Optimal Size and Design: The size of this 6pcs drill bit is 3/16''-1/2'' ,1/8''-1/2'', 1/4''-3/4'',3/16''-7/8'',1/4''-1-3/8'',and 13cm/5.12'', offering the ideal balance between reach and control. The spiral design reducing friction during drilling Hex Shank Compatibility: Featuring a hexagonal shank design, these step drill bit provide a secure grip in the chuck of your electric drill, minimizing slippage and enhancing reliability during use Comprehensive Packaging: The set comes neatly packaged with all 6 pieces included, making it easy to store and transport your tools wherever you need them. Ideal for both professionals and DIY enthusiasts alike Specification: Material:metal Size Chart: 1/8''-1/2'' 3/16''-1/2'' 1/4''-3/4'' 3/16''-7/8'' 1/4''-1-3/8'' 13cm/5.12'' Package Includes: 6 piecesStep Drill Bit Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.