The Oral-B iO Specialised Clean electric toothbrush heads are specially designed with dental professionals to reach and clean areas which require special focus such as braces, implants and misaligned teeth. Features: Specially designed with dental professionals to reach and clean areas which require special focus such as braces, implants and misaligned teeth The Oral-B iO Specialised Clean toothbrush head is precisely shaped with angled outer tufts which support the central tuft, to reach and clean hard to reach areas IO Technology combines Oral-B's unique round brush heads with the gentle micro-vibrations of iO toothbrush for Oral-B's best cleaning performance Oral-B iO replacement toothbrush heads are exclusively designed to fit Oral-B iO toothbrushes Dentists recommend changing brush head every 3 months to keep an optimal cleaning efficacy Number of toothbrush heads included in this pack: 2 Specifications: Dimensions: H:8.5 x W:1.5 x D:2.0 cm Colour: White Material: Plastic Model N