Pay attention to before using: 1. Please check whether the gear of the bottom loosens or tighten before use. If it's loosened, please tighten it 2. Please check the rubber gasket and be sure it is put snugly into the bottom blade. (The rubber gasket is used to avoiding a leak) 3. Do not overfill! To avoid spilling, do not add ingredients past the Max fill line 4. Place the replacement blade onto the cup and screw it tightly until you have a good seal 5. Please make sure it in the right place and locked tightly Fitments: Variable Speed Drink Machine 1002 1230 2-Speed Drink Machine 2-Step Timer Drink Machine 5006 5012 5057 5062; VITA-MIX BLENDER MODELS: VITA-PREP 3 VM0101 VM0115; VITA-MIX BLENDING STATION MODELS: VM0116E Fitments: VITA-MIX MODELS: Bar Boss 5039 BarBoss BarBoss MP Drink Machine MP In-Counter Blending Station MP On-Counter Blending Station MP On-Counter Touch & Go T&G 2 Blending Station MONEY-BACK GUARANTEE: If you have questions, pls feel free to contact us, we will deal with it asap. For any reason you're not completely satisfied, you can ask for a replacement or full refund Packing including: Blender Drive Socket 891and Allen wrench (Pack of 2,4,6 Optional)