[Durable and Portable]: Flexible shaft extension bit holder is made of metal material, and portable, Flexible out shield protects your hand while inside shaft rotates. [Hexagonal Shank]: This flexible shaft can be used for general screw cordless drill, it can also be used for electric screwdriver. Fit hex screwdriver or screw cordless drill shank diameter: 6.35mm (1/4"). [Flexible Shaft]: 1/4 inch flexible shaft extension bit holder, the flexible shaft can bend up to 300 degrees. Bends,twist and turns to use drill into tight and confined spaces. [Application Scenarios]: Screwdriver bit holder is mainly used in computer case, electrical cabinets, furniture, electrical appliances and other narrow spaces where screwdrivers can not work normally. [Practical and Bit holder keeps fasteners and bits secure while driving, practical and Feel to contact us if you have any questions. We will be happy to serve you., Weight: 0.0881849048 pounds, Manufacturer: Uxsiya