1.Multifunctionality The step drill bit serves multiple purposes, allowing you to drill holes of various diameters, open and numerous materials, and perform precise countersinking, making it an essential tool for any project. 2.Timesaving efficiency For processing round holes of various sizes in thin materials, the step drill bit eliminates the need for frequent drill bit replacements, saving you both time and effort during your drilling tasks. 3.Innovative design With an Xshaped opening design, the step drill bit significantly reduces drill bit slippage, providing you with better control. The universal hex shank type ensures compatibility with most drilling tools for seamless use. 4.Engraved scale The step drill bit includes a scale that allows the diameter to be easily read at a glance. The clear markings enable precise drilling without guesswork, ensuring the accuracy of your work.