Amazon.com: Philips Sonicare Original C2 Optimal Plaque Defence (Formerly ProResults Plaque Control) - 4 Pack in White (Model HX9024/10) : Health & Household
8 PCS Plaque Control Toothbrush Replacement Brush Heads pack HX9044/33 C2 WHITE | eBay
C2 Optimal Plaque Control Sonic Toothbrush Head Replacement Brush Heads Compatible with Philips Sonicare ProtectiveClean Power Brush, White, HX9024, 4 Pack - Walmart.com