*Construction: Crafted from high-strength carbide steel, these drill bits are engineered to be wear- and heat-, long-lasting sharpness and performance throughout their use, even under demanding conditions. *Quick Adjustment Mechanism: With a rotating depth adjustment ring, this drill bit set allows for tool-free depth setting, enabling you to achieve precise adjustments swiftly and efficiently, enhancing overall work productivity. *Versatile Size Options: This set includes a variety of tapered drill bits ranging from 3.2mm to 4.8mm, catering to different screw sizes and making it perfect for diverse applications in woodworking, renovation projects, and appliance assembly. *Precise Depth Control: The adjustable depth stop feature automatically regulates drilling depth, effectively any accidental penetration that could damage surfaces during woodworking tasks. *Organized Storage Solution: The set comes with a portable blue hard storage box that features dedicated slots for each component, keeping drill bits and tools organized, dust-free, and easy to transport for on-the-go projects., Manufacturer: Akfldms