Made of selected steel, this adapter set boasts superior hardness and durability, making it safe and long lasting for both manual and electric tools Perfect for professional repair technicians, crafters and homeowners looking for multiple tools, this adapter set will meet the needs of all users who need superior tool conversion Suitable for a wide range of applications such as electronic repairs, furniture assembly, automotive maintenance, daily household repairs, and can be adapted to a variety of tasks Each adapter has a strong magnet, perfect addition to your bit set to hold the bit firmly in place and prevent slipping during use to ensure accuracy Transform your toolkit with our 1/4 to 4mm bit adapter, designed to seamlessly convert between different tool interfaces, increasing the efficiency of any task, Manufacturer: LEMEIGUO