1. Material: catalpa + wood 2. Dimensions: 17.5 cm long, 4.5 cm inside diameter at the top, 1.7 cm inside diameter at the bottom 3. High-spring design, compression springs automatically open the clamps, and the elasticity is restored comfortably. 4. Ten rows of serrated broken shells take out a large area of nuts and walnuts, making it easier to open walnuts 5. Wood grain handle feels comfortable and labor-saving 6. Suitable for bifida, macadamia, pistachio, walnut, etc.