This is a 4-pack of multi-action brush heads, designed to restore 100% plaque removal effectiveness. - Brand: Oral-B - Model: Multi-Action Brush - Quantity: 4-pack - Color: White - Features: Restores 100% plaque removal I originally purchased a 5-pack, but I opened one intending to use it. Unfortunately, it doesn't fit my electric toothbrush (different series), so I'm offering the remaining brush heads to someone who can use them. I can also include the opened brush head if desired.