Get a pack of four protective electric toothbrush head covers. Or upgrade to receive a pack of six. Round covers made from clear PC material. Portable and dustproof design which is perfect for keeping your toothbrush head in good condition. Compatible with round toothbrush heads including Oral-B EB20-4, EB18-4, EB25-4, EB50-4, EBS17-4, and EB17-4. Size: 6cm x 2cm x 2cm. Electric Toothbrush Head Covers | Living Social