The 6.35mm extension shaft is flexible, bendable and can be rotated to many different angles. It punches holes in most small spaces, without limits. Make your installation more flexible, comfortable and efficient. Covered with high quality plastic case to protect your hands from hurt and do the job perfectly. The inner shaft is made of durable metal material and the angle is adjustable. Wide range of use, compatible with small wrenches, cordless screwdrivers, low-speed DC hand drills, torque drills, electric screwdrivers. It is mainly used in electrical cabinets, furniture, electrical appliances and other narrow space screwdrivers. The 6.35 mm screwdriver head holder is available in 3 different sizes, 60 / 100 / 150 mm, with built-in magnet (located at the bottom of the Hole Section) to hold the head in place. Also, it has a locking mechanism that automatically ejects the batch head. This drill bit extension kit can work with electric screwdriver, manual screwdriver, drill bit, etc. It is an indispensable element in the toolbox.