3 PACK 8 Replacment Tooth Brush heads for Pursonic Electric toothbrushes models S400, S420, S430, S450, S620 and S625 models 3 PACK 8 Replacment Tooth Brush heads for Pursonic Electric toothbrushes models S400, S420, S430, S450, S620 and S625 models 3 PACK 8 Replacment Tooth Brush heads for Pursonic Electric toothbrushes models S400, S420, S430, S450, S620 and S625 models Compatible with Waterpik STRB-3WW COMPATIBILE MODELS: Waterpik Complete Care 9.0 (CC-01CD012-2) and Waterpik Complete Care 5.0 (WP-862, WP-872, WP-877, WP-882, WP-892). Compatabile with Welness rechargeable toothbrushes, Dazzlepro's Advanced Sonic Toothbrush and the Advanced GT Sonic Toothbrush. They are also compatible with the follow other toothbrush brands and models: Bling Dental: Diamond 2.0 Health HP-STX 3 pack replacement Brush Heads for S400/sS420/S430/S450/S600/S625 models. aLSO Brush Heads for Waterpik Complete Care 5.0 & 9.0, 4-Pack, Black