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Awn Tss via Amazon has COSLUS 300ml Cordless Rechargeable Water Dental Flosser (Black, Professional Set) on sale for $35.99 – $28 with promo code XM28XAQP at checkout = $7.99. Shipping is free.

Details:[list][*]COSLUS C20 cordless water flosser; ADA Scientific Council Accepted (as stated)[*]Dual-thread 0.3 mm + 0.3 mm water pulse; 1400–1800 pulses/min; multiple modes and pressure settings including Soft[*]300 ml tank; 5 interchangeable tips[*]Rechargeable battery; 3-hour charge; stated 30-day use; USB cable included; 5V USB-A adapter not included