Drill Extension Flexible Shaft Screwdriver Bit Holder

This Flexible shaft can be used for general formula hand drill chuck,
it can also be used for electric screwdriver screwdriver.
Flexible shaft head can be mounted hexagonal shank (1/4 handle) the first batch,
mainly used in computer chassis, electrical cabinets, furniture,
electrical appliances and other narrow space screwdriver can not work in an environment operations