4. Hand-twisted: hand-twisted design, no need to force, drilling more easily. 3. Semi-automatic design: easy to operate, just gently turn the handle to complete the drilling, saving time and labor. 1. blue design: stylish appearance, with the blue design, more personalized to use. 2. extended handle: longer handle, more convenient and comfortable to operate, reduce hand fatigue. 5. Multi-function: suitable for drilling different materials, such as wood, metal, etc., flexible and practical., Manufacturer: Ounfhtrttk