Features:_x000D_ _x000D_ 1. Set: There are 33 chrome vanadium steel drill bits, enough to meet your daily and replacement needs; you can also share with family and friends who love handicrafts or are engaged in handicraft work._x000D_ _x000D_ 2. High-quality materials: The saw head is made of high-strength chrome vanadium steel, which makes these saw heads durable and accurate, not easy to deform or wear, provide sharper cutting edges and longer service life._x000D_ _x000D_ 3. Excellent design: the drill bit is well-made and the surface is smooth; the side row recess design is convenient for drilling, which improves the drilling speed and completes the work more efficiently._x000D_ _x000D_ 4. Wide range of applications: Hollow drill bits can be used with confidence and have a wide range of applications. They are suitable for drilling stones of different materials such as glass, ceramic tile bottles, block jars, ceramic tiles, ceramics, slate, marble, and granite._x000D_ _x000D_ 5. Portable: The compact size is easy to use, transport and store, and does not take up too much space; please use a drill with sufficient water for lubrication and cooling._x000D_ _x000D_ _x000D_ Description:_x000D_ _x000D_ This hollow bit is made of high-quality chrome vanadium steel, which is durable, very strong and has a long service life._x000D_ _x000D_ _x000D_ Specifications:_x000D_ _x000D_ Material: Chrome vanadium steel_x000D_ _x000D_ Category: Hexagon Screwdriver Set_x000D_ _x000D_ Style: Hollow Bits_x000D_ _x000D_ Size: 68*48*29mm_x000D_ _x000D_ _x000D_ Package Included:_x000D_ _x000D_ 33pcs* hollow bit_x000D_ _x000D_ _x000D_ Notes:_x000D_ 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.