3.Can be arbitrarily bent, suitable for manual screwdriver, electric screwdriver, pneumatic screwdriver, make work easier. 1.Professional for reaching dead and narrow parts, beyond screwdriver can reach the installation or removal of screws. 2.High hardness, rugged, clear angle, easy to loose Flexible Drill Bit Extension bit holder. 4.Metal hose, bent 300 degrees, can be rotated in different directions, easy to control., Manufacturer: Mcnhbdgg