This is a set of 30 pcs suction cups made of quality material that are able to withstand yellowing and aging. They are able to suck firmly on smooth surface like wall, windows, and glass, ect. Comes with a bolt for you to screw the suction cup into a hole. Good for hanging wreaths and decorations in windows, on mirrors, suitable for kitchen, office, bathroom and other places. Feature - Color: Transparent.- Material: Plastic- Size: About 4 x 4 x 1.5cm.- Great for hanging hand made decoration, keys, small and light weight stuffs- Will suck on any glass, windows or mirrors, please on the smooth surface- Made of clear plastic material that can resist yellowing and aging.- Can be used to to hold the poster, sign, information card, price tags, sign frame on the glass, showcase, wall, rack, shelf etc.- It also can be used by wedding car for balloon decor.- Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!Packing list: 30 x suction cups