C1 ProResults Standard sonic toothbrush heads HX6010/32 | Sonicare
Standard Replacement Toothbrush Head Compatible with Philips Sonicare Electric Toothbrush C1/C2/C3/G2/G3/W3/4100/5100/6100/7500/9000/9900, Etc. | SHEIN UK
Philips Sonicare C1 Toothbrush Heads 8 Pack New | eBay
Philips Sonicare Original ProResults Standard Sonic Toothbrush Heads - 10 Pack in White (Model HX6010/32) : Amazon.co.uk: Health & Personal Care