With its lightweight and portable design , this tool set is easy to carry and store , making it a practical for repairs and maintenance work Ideal for professional technicians , enthusiasts , electricians , and installers who require to tackle complex tasks with ease Enhances your toolkit with our Bit Holder Set , four extension lengths ( 60mm , 75mm , 100mm , 150mm ) suitable for easy access to tight space and efficiency during projects Perfect for home , automotive repair , electrical installations , and industrial assembly , this bit holder set is essential for reaching confined areas Crafted from high strength steel , these bit holders boast 1 / 4inch quick Changing hexagonal handle , ensuring compatibility with a wide electric drill and screwdriver, Manufacturer: TSMORY