XIANQI Material: Acrylic, environmentally friendly and durable Size: The upper diameter is about 2.3 cm/0.91in, and the lower diameter is about 5 cm/1.96in Easy to install: no glue needed. Just tear off the protective lining from the self-adhesive backing and glue it to any furniture Applicable surface: glass, ceramic tile, stainless steel, wood board and any smooth and clean surface Wide uses: It has good stickiness and can be glued to windows, wardrobes, cabinets, drawers and even glass doors Colour: transparent Product includes: 4pcs Size: 5*2.3 cm Notes: Please allow 1-3cm error, due to manual measurement, please make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual colour of the item. Thank you for your support!