<p><b>KIND REMINDER BEFORE PURCHASE:  </p></b> <p>COMPATIBLE MODEL : ONLY Fits For 250w Original Magic Bullet Blender ( MB1001 Series), WILL NOT WORK WITH ANY OTHER BLENDER MAKE OR MODEL. Does NOT fit Mini Magic Bullet or Baby Bullet, Does NOT fit Any Nutribullet or NutriNinja.These cross blades were made exclusively for your Original Magic Bullet (MB1001). Please confirm your model before your purchase.<p><b>TIPS FOR USAGE  </p></b> <p>1. You are recommended to replace your Magic Bullet blender every 6 months or as needed for optimal performance  </p> <p>2. Please check whether the gear of the bottom loosen or tighten before use. If it's loosen, please tighten it  </p> <p>3. Please check the rubber gasket and be sure it is put snugly into the bottom blade. (The rubber gasket is used to avoiding leakage）  </p> <p>4. Do not overfill to avoid spilling, do not add ingredients past the "Max" line  </p> <p>5. Place the replacement blade onto the cup and screw it tightly until you have a good seal  </p> <p>6. Do not run your blender over 4 minutes at a time to prevent overheating of the blender </p> <p><b>