Brand new - says it comes with 3 suction cups but only one is provided. I’m sure you can find replacements if necessary

The Hygger Ultra Short Aquarium Quartz Heater 100W HG060 is a compact and efficient heater designed specifically for fish tanks. With its ultra short design, it allows for easy installation and maintenance. The heater comes with a suction cup for added convenience, making it easy to attach to the aquarium glass. The 100W power rating provides consistent and reliable heating to keep your fish comfortable and healthy. Ideal for small to medium-sized aquariums, this heater is a must-have for any fish tank owner looking to regulate the water temperature.