It is a can opener that is mint green in color and contains a turquoise square in the middle. It contains a rotating cutting wheel and a gray button on top that one must press to open their can.
Role in series
SpongeBob keeps this device on the counter in his kitchen and uses it to open cans of snail food for Gary. It first appears in "Gary's New Toy" when SpongeBob is trying to get Gary's attention by slowly opening a can of Slimycan Snail Food with this can opener. However, his attempt fails when the latter is too busy playing with his brand new toy ball.
It reappears in "SpongeBob You're Fired" when a depressed SpongeBob comes home from work after Mr. Krabs fires him over a nickel, lazily using the device to open cans of Slimycan Snail Food and Snail-Po for Gary.
Despite being a kept item in his kitchen, SpongeBob has only been shown using this can opener to open cans of snail food.