The auto rebounding spring mechanism and auto return clip for peeling process, making it quick and efficient to cracks open hard nut without tiring your hands Made from 304 stainless steel, this nut cracker tool is designed for long lasting use This heavy duty tool is perfect not only for chestnuts but also for cracking a variety of nut including pistachios, almonds, and walnuts, making it a valuable addition to any kitchen The upgraded chestnut peeler features a crosses cutter and serrated edges, allowing you to easily and securely open chestnuts with minimal effort The nonslip handle ensures a grip, providing comfort and control during use, so you can easily manage different nut sizes with confidence