handle design, comfortable grip, more stable power transmission, reducing the pressure on users hands, effectively improve work efficiency Combined with use of precisions screws, the screw End from being damage, provide more tightening effect and reduce the risk of damage Multifunctional suit, including a variety of specifications of Ball End, to meet different screw tightening need, a set to solve a variety of tasks Selected from steel, provide stable, and is essential component in professional Ball End design, 360 degree rotating, easy to handle the screw fixation in various angle and narrow space, improve the flexibility of and reduce the difficulty of use, Manufacturer: TFAOYS