Package include 20 packs of suction cups with screw nut set, each suction cups measures 1.57 in / 40 mm, suitable size and enough quantity could meet your needs for hanging utensils or fixing applications in . These window suction cups are made of high strength transparent plastic materials, sturdy and have nice suction, , waterproof, can be used for a long time. These screw suction cups are made of soft PVC material, which can easily stick on smooth , such as glass, , mirrors, refrigerator, ceramic tile, firmly secured because of the barometric pressure. Plastic suction pads are suitable for kitchen, office, bathroom, cars, etc, which can be applied to hang license plates, sunshading curtain, decorations, dolls or hanging plates, bolts can also be used to secure items for shock absorption and fixation. Compared to regular adhesive hooks, suction cups suction cups for glass do not leave a mark when removed, if the suction cup is deformed or it's adsorption effect is not good, you can it into 100 hot water for about 60 seconds, return to its original state. Color: transparent Material: plastic Package Contents: 1 set suction cup adsorption Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.