Hook: 360 degree rotating hook is strong and durable, not easy to damage. Suction cup installation: No trace, no nails and no drilling. Pressure adjustment: Pull the air out of the suction cup to enhance the adsorption force. Secure: Suction anchor is a better way to secure almost anything, no more worries about loads not being secured. Durable: Waterproof, moisture-proof, strong adhesion, use as usual in humid environments. Adjustable strap: The strap can be detached and adjusted up and down. Specifications: Color: Green. 4pcs anchor suction cups. Note: The data are all measured manually, please allow 1-2cm error. 3cm Due to differences in light and display, there may be some color differences, please refer to the actual item received.