3 Sets,all for 12Pcs electric toothbrush head. 3757 and for electric toothbrush type 4731 4728 4739 3709 3728 3738. Qty:3 Sets (4 pieces per set),all for 12Pcs. The cup-shaped brush head cleans teeth comprehensively and deeply cleans hard-to-brush areas such as interdental spaces and gum lines.
eBay