Feature: * Exquisite workmanship, corrosion-resistant and wear-resistant. * Screw-type padlock ensures the accurate locking screwdriver has a longer service life, reducing the wear of the screw and head. * Just insert the tip of the screwdriver into the magnetic ring to remove the screw easily. * The magnetic screwdriver does not magnetize the screwdriver nor screw.*Perfect for 6.35mm thick hex screwdriver.*Magnetic rings in diameter (1/4 inch) only, not including other accessories in the picture! Specification: Product name: magnetic ring Material: alloy Color: blue Length: (approx.) 21-23 mm Size: 6.35 mm Type: Smooth, rugged Suitable for: 6.35 mm flat head hex screwdriver Quantity: 6Pcs set Package includes: 6 magnetic ring Note: 1. Transition: 1cm = 10mm = 0.39 inch.2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.