Features Material: Metal. Easy to install and carry. Hex Shank: 6.35mm (1/4") ; Inner Hexagon Head: 6.35mm (1/4"). Flexible shaft can bend up to 300 degrees. Used for general screw cordless drill. Flexible shaft head can be mounted hexagonal shank (1/4 shank) screwdriver bits. Used in computer case, electrical cabinets, furniture, electrical appliances and other narrow spaces where screwdrivers can not work normally. Features: Easy to install and carry. Flexible shaft can bend up to 300 degrees. Used for general screw cordless drill. Flexible shaft head can be mounted hexagonal shank (1/4 shank) screwdriver bits. Used in computer case, electrical cabinets, furniture, electrical appliances and other narrow spaces where screwdrivers can not work normally. Specifications: Material: Metal Hex Shank: 6.35mm (1/4") Inner Hexagon Head: 6.35mm (1/4") Total Length: 200mm / 7.87" Weight: 72g(approx.) Package Included: 1x Flexible Shaft Extension Bit Holder Note: 1. Please allow 1-m error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List