About this item Guaranteed to hold strong: Upgraded to an even stronger European made adhesive. Keeps your headphones out of sight & easy to reach. Mounts in seconds & holds ultra-securely to clean/finished surfaces - guaranteed. Will not hold to unfinished wood or fibrous surfaces. Thick premium silicone construction + steel inner reinforcement (new). Lessens cord clutter. Can hold two sets of headphones. Dimensions: 4.13 x 1.38 x 2.17 inches.