Features: 1.It tightens loose screws rapidly. 2.Equipped with 10 types of screwdriver bits in one screwdriver set. 3.An essential tool for home or office using, which would save you countless hours. 4.Anti-slip and L-shaped handle grip, very practical for horizontal and vertical usage. 5.It was made of high hardness chrome vanadium steel, which is good quality, flexible and strong.