Features Metal material, durable and portable, Flexible out shield protects your hand while inside shaft rotates. Fit hex screwdriver or screw cordless drill shank diameter: 6.35mm (1/4in). Flexible shaft can bend up to 300 degrees. Bit holder keeps fasteners and bits secure while driving. Bends,twist and turns to use drill into tight and confined spaces. Metal material, durable and portable, Flexible out shield protects your hand while inside shaft rotates. Fit hex screwdriver or screw cordless drill shank diameter: 6.35mm (1/4in). Flexible shaft can bend up to 300 degrees. Bit holder keeps fasteners and bits secure while driving. Bends, twist and turns to use drill into tight and confined spaces. Specifications: Material: Metal Hex Shank: 6.35mm (1/4") Inner Hexagon Head: 6.35mm (1/4") Total Length: 200mm/7.87" Quantity: 1 Weight: 72g Package Includes: 1 x Flexible Shaft Extension Bit Holder Package List