Quality and Durability: The drill bits are made of high-speed steel with added titanium, providing excellent durability and sharpness. Innovative Design: The double-flute design facilitates smoother cutting and easy chip removal. The split point angle of the step drill bit is 118°, which reduces friction and pressure, allowing for more precise operation. Wide Application: The step drill bit can meet the needs of various hole sizes and is suitable for drilling in aluminum, steel, wood, and plastic. Convenient storage: Our titanium drill bit set comes with a stand featuring a size index for easy storage and portability. Set includes：The set includes 5 drill bits with sizes ranging from 1/4-1-3/8, 3/16-7/8, 1/4-3/4, 1/8-1/2, to 3/16-1/2, suitable for most market brands.