Product:You will receive 4 powerful magnetic bit holders. The magnetic force is increased by 10 times, the clamping force is stronger, and the efficiency is not lost. Increased magnetic force, more powerful clamping, does not fall off. Removal design, easy to install and remove, which improves efficiency. Scope of application: Only suitable for 6.35mm diameter double-head screwdriver bits with aluminum alloy positioning magnetic ring. Please confirm whether it is suitable before purchasing! ! ! Function: Lock screws precisely and securely while reducing abrasion of the screw and screwdriver. EASY TO USE: Simply insert a screwdriver into the magnetic ring and you can easily grip and secure the screws. Locks screws precisely and securely while reducing wear on screws and screwdrivers. High quality material: made of S2 alloy steel, well made, high precision, high efficiency and long life of life. They are practical tools for you to use in daily, the sufficient quantity will meet your different replacement work needs. These magnetic ring screwdriver head can be applied in hinge installation, pendant fixed, furniture assembly, vehicle repair so on, which makes your work more practical and efficient. Commitment:Thank you very much for choosing our products , if you have any questions, you can contact us at any time, we will respond to you in time and make you satisfied.