Features: These magnetic screw rings can magnetize screwdriver, bits, easily and quickly catch the screw and fix, reduce abrasion and improve work efficiency. Driver bits Magnetizers is selected from plastic, which are strong, light and portable, which can be apply for long time. The Magnetizers is suitable for 1/4inch electric screwdriver bits, also can be suitable for slotted and other screwdriver bits. You only need to insert the screwdriver bit into the magnetic Rings, the screw can be easily pick up. This screwdriver magnetic Rings can be apply for hinges installation, furniture assembly, vehicle repair and so on, making your work more convenient. Specifications: Component:ABS Type:3Pcs/5Pcs Size:Approx.15x21mm/0.6x0.8inch Package Includes: 2 Optional Package: Package 1 Include:3Pcs Magnetic Screw Rings Package 2 Include:5Pcs Magnetic Screw Rings note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.