4 Pack Vacuum Cleaner HEPA Filters for Cyclonic Series RO3753EA RO3731EA RO3786EA Features: - Made of material, durable and sturdy, safe and wear-resistant. - You can put 6 AA 1.5V batteries into the battery box, to add more power and impetus. - Comes with 3 motors to improve speed. Battery Box: Add more power to your Power Functions Give even more power and movement to your creations with an extra battery box to supply power to your Power Functions motors Each battery box can power 2 XL-Motors or 4 M-Motors at the same time. Requires 6 AA (1,5V) batteries, not included M Motor: Add a spin to your Power Functions models Build an extra medium-strength, medium-sized M-Motor into your creations and watch things start moving Use the M-Motor for speed. Specifications: Color: As shown Material: Plastic Battery Box: Supprt 6 AA 1.5V Batteries (not included) Package: As you choose.