Multiple usage: the magnetic screw rings are suitable for many applications, can help you to deal with many work problems, be applied to hinge installation, fixed pendant, furniture assembly, vehicle repair and so on, to make your work more convenient  Reliable material and proper size: these bit magnetizer rings are made of aluminum alloy, which are durable material, and you can use them for a long time; The magnetic rings measure 1 inch/ 25 mm in length, 0.59 inch/ 15 mm in outer diameter, and 1/4 inch/ 6.35 mm in inner diameter  Functional tool for you: this magnetic screw ring can catch the screw easily and quickly, and fix it to prevent the drill bit from slipping and improve the work efficiency; Just insert the screwdriver bit into the magnetic ring, the screw can be easily picked up