Features:This Flexible shaft can be used for general formula hand drill chuck, it can also be used for electric screwdriver.Flexible shaft head can be mounted hexagonal shank (1/4 handle).Mainly used in computer chassis, electrical cabinets, furniture, electrical appliances and other narrow space screwdriver can not work in an environment operations.The design is clever, suitable for all kinds of dead corners, practical and wide application.Made of high quality material, reliable and durable in use. Specifications:Shape: snakeSystem: metric systemFlexible shaft dimensions:Hex shank: 6.35mm (1/4")Inner hexagon head: 6.35mm (1/4")Length: 290mm/11.4inchWeight: 80 gPackage Included:1 x Flexible Shaft Note: Universal flexible shaft is a special soft shaft electric screwdriver, can also be used in rechargeable drill with torque adjustment, but not recommended for use in the absence of torsion adjust electric drill, if install and twist screws, twist screw to the end, no torsion adjust electric drill will continue to spin, due to the large twisting force of electric drill, the soft shaft will damage.