Ideal for coring apples and pears. Plunger design makes core removal easy. Injector is stainless steel. Hand washing recommended. Instructions: Place stainless steel tube over stem end of apple and press down firmly. Push plastic plunger through cutting tube to eject core. Measures: 6" x 1.75" x 1.75" / 15cm x 4.5cm x 4.5cm. Injector measures: .75" / 2cm diameter.