The flexible drill extension shaft with 10 sizes of screwdriver bits and sleeves from 5mm to 13mm (0.2-0.5 inch) can meet your different needs. p> The flexible drill extension set is made of high quality metal material, long service life and can withstand NM torque. It is covered with a soft cover to protect your hands from injury. The serpentine drill extension can be extended to 295mm. The shaft can be flexibly bent, rotated and straightened even in a narrow space, safe and flexible. The flexible drill shaft is a good tool for families and businesses, and an ideal tool for maintenance and repair of equipment, furniture, household appliances, computer boxes, control cabinets, etc.