Electric toothbrush heads for Oral B spare parts. They are the substitutes of Oral B fashioned toothbrush heads. The substitute toothbrush head in this link matches Oral B Pro series/Vitality, Smart series, Genius series, adding DB4010, DB4510, D12, D16, D20, D29, D34, D36, Pro600, 600plus, Pro650, Pro700, Pro1000, Pro2000, Pro2500, Pro3000, Pro4000, Pro5000, Pro6000, Pro6500, Pro7000, Pro8000, Pro9000 and oc20, 3709, 3744, 4729, 3756, 3757 and so on. Package included: 4 PCS toothbrush heads