7-pack replacement brush heads with diamond-shaped bristles for effective stain removal. - Brand: Philips - Model Name: Sonicare WC White Plus - Quantity: 7-pack - Features: Diamond-shaped bristles remove stains - Plaque Removal: Up to 20x more plaque removal - Stain Removal: Up to 2x more stain removal - Gum Care: Promotes gum health in 2 weeks Regular size. Thank you for viewing. I bought an 8-pack of replacement brush heads, but they broke, leaving me with 7 unused ones. I'm now using a different type, so I have these 7 available. I'm selling them cheaper than Amazon, so if you use these, please consider them.