Heavy duty spring loaded nutcracker - Easy cracking nuts, pecan,hazelnuts, almonds, walnut, brazil nuts, etc. NOTE: MAY NOT WORK FOR HARD BLACK WALNUT,MACADAMIA AND SIMILAR HARD SHELL NUTS. This type of nutcracker is more easy to use compare with traditional the nut/pecans/walnut is still not open after the first crack, try to rotate the nut and crack it one/two more:May NOT work for hard black walnut ,macadamia and similar hard shell nuts.