Color:4 pack Smart fixate sticky gel pads,you can use it with many ways just whatever you want.It can be reusable.you could buy one for you.It is a magical gel pad. This sticky gel pads is 4 PCS Package include : Stripe Gel Pad x 2 PCS (5.91*1.18*0.2 inch) Bone Gel Pad x 2 PCS (5.31*2.17*0.14 inch) How to use: 1. Before installing it, please keep the contact surface of silicone nano rubber pad clean and dry, follow the steps shown as the picture strictly, you can use the gel pads sticky on many surfaces. 2. Not suitable on paper, delicate surface, lime wall, rough surface, granular surface, and avoid prolonged use and avoid putting some valuable or irreplaceable items on it. 3. Please pay attention to goods safety,heavier,vulnerable,expensive items should try to avoid prolonged vertical or inverted paste, to prevent accidental damage. Caution: 1. The fixate gel pads do have strong stickiness, but if the object you are trying to hold is really heavy, you should use more than one gel pad holder to securely hold your object to the desired surface. 2. Another factor that affects the stickiness of gel pad holder is the surface type and shape of the object which you want to stick. 3. The contact area is bigger, the object will stick on fixate gel pad more firmly.