LiveCoco's Recyclable Brush Heads are compatible with: • Any Oral-B* or Braun* electric toothbrush that is supplied with a circular brush head excluding iO versions • Any Superdrug/Asda/Aldi/Tesco electric toothbrush that is supplied with a circular brush head *Please note-these are Oral-B/Braun compatible brush heads. Oral-B/Braun are third-party trademarks with no affiliation to LiveCoco. Directions: • Just pull your existing brush head off and clip ours on just as you would normally. • Please ensure that the brush head is attached in a secure manner before use.