Designed by Joseph Joseph, this folding potato masher can easily be folded flat after use for excellent space saving storage for even the smallest of kitchens. Before using, simply lock the mashing head in position with the small sliding collar located on the shaft. After use, slide the collar back up the shaft and secure it at the base of the handle. As well as being easier to store, Delta is also more efficient to use, it's curved mashing plate is designed to fit better into the edges of a pan, which means more potato is mashed with ease plunge of the masher. Suitable for non-stick pots and pans and is dishwasher safe for ease of cleaning.