qitizu replacement heads compatible with oral b io electric toothbrush, replacement toothbrush heads fit for oral-b io 2/3/4/5/6/7/8/9/10 series toothbrush, 8 packs (black) black 8 count (pack of 1) is up for auction in Beauty & Personal Care. The current bid is $2.00, 91% below the $22.99 MSRP, in New/Like New condition. Bid on this item at our Louisville - Intermodal Dr. location before the auction closes.