Overview12 Metal Plates 6 Rectangular Metal Plates And 6 Round Metal Plates Are The Perfect Solution For Magnetic Phone Holders That Lack Metal Plates The Phone Metal Plate Sticker Also Works Perfectly With All Magnetic Phone Holders And Car Phone Holders. Strong Self Adhesive The Magnetic Metal Plate With 3M Self Adhesive Adhesive Makes The Adhesive Structure More Stable Easy To Remove Not Easy To Leave Residual Adhesive No Damage To The Surface Of The Holder Even When Driving On Rough Roads Or When Braking Heavily It Can Hold Your Device Firmly Without Worrying About It Falling Off Ultra Thin Metal Plate The Thickness Of The Metal Plate Is 0.4Mm It Can Be Easily Attached To The Top Of Your Phone Or Device It Is Recommended That You Install The Metal Plate Inside Your Phone Case For A Beautiful Design Easy To Use Simply Attach The Phone Metal Plate To The Back Of Your Phone Or Place It Between Your Device And Its Case For Thicker Cases We Recommend You Attach The Metal Plate Directly To The Back Of The Case. Warm Tips This Mobile Phone Metal Plate Is Just A Metal Plate It Is Designed To Work With A Magnet Mount It Is Not A Magnet. Clean And Dry The Surface Of Your Phone Case Before Gluing The Metal Plate To Your Device.