The meat chopper features 4-layer stainless steel blades, 300W 5420 powerful motor and 304 stainless steel bowl. 2 Speeds and pulse operation realize precise control of chopping results. 2L Large capacity, effortless creativity for salads, soup bases, meatballs, sauces and all delicacies you like. Compact, lightweight design with simple in-bowl storage, and easy clean. The bowl, lid and blades are all dishwasher. Using food grinder is no hassle any more. All parts made of quality materials, bringing a long service life. How to Use the Food Chopper？ Step 1 :Then take off the black blade sheathes, install S-blades on the cutter shaft to form 4-layer blades. (DO NOT get hurt). Step 2: Install the cutter shaft with 4-layer blades in the bowl. Step 3 :Put the bowl on the non-slip pad and put food into the bowl, please make sure no food pushes up the blades or tilts the cutter shaft. Step 4 : Put the transparent cover on the work bowl tightly, then put the motor base on the cover properly. Step 5 – Press the speed buttons to start work. What If the Motor Works But the Blades Do Not Turn? 1. Please check whether the cutter shaft is installed correctly. 2. Please check that the blade is not stuck by food. 3. Please check if the transparent cover and the bowl fits tightly. 4. Please check whether the cutter shaft is tilted, if it is tilted, please put it straight.