JOYROOM JR-Mag-M3 2 PCS MagSafe Magnetic Iron Sheet Sticker Ring(Black)

1. Universal compatibility, converting your non-magnetic case into a magnetic one2. Enhanced magnetic strength, 30% stronger than official magnetic cases, making positioning easier and more accurate3. Precise engineering, won’t affect wireless charging, less heat4. Easy installation:(1). Clean back surface of your phone case(2). Assemble alignment card and installation tool(3). Fit the assembled card and tool onto your phone(4). Remove protective film from the ring, install the ring to the aligned position(5). Installation finished5. Silicone surface for smoother touch and more comfortable grip6. Material: silicone + iron sheet7. Outside diameter: 58mm, inside diameter: 44mm, thickness: 1.0mm8. Weight:4g