The Oral-B FlossAction replacement electric toothbrush head provides an ideal comprehensive clean versus a regular manual toothbrush. Its bristles clean tooth surfaces while specially designed MicroPulse bristles reach and clean deep between teeth for better plaque removal. Compatible with Oral-B genius 8000, 9000. Compatible with Oral-B pro 600, 650, 1000, 2000, 2500, 3000, 4000, 4900, 5000, 6000, 6500, 7000. Compatible with all Oral-B vitality and vitality plus variants. Each order comes with 4x Oral-B FlossAction Electric Replacement Toothbrush Heads.