Why don't electric toothbrush heads spin? They all seem to just wiggle. - Quora
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CallySonic Sonic Electric Toothbrush for Adults and Juniors, 48,000VPM Rechargeable Toothbrushes with Normal, Sensitive, Massage Modes, 4 Replacement Brush Heads - H31 Black : Amazon.co.uk: Health & Personal Care
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Mornwell Electric Toothbrush USB Fast Charging 3 Modes Rotary Toothbrushes Rechargeable Spin Toothbrushes with 4 Round Brush Heads for Adults & Kids Over 8 Years Old : Amazon.co.uk: Health & Personal Care