Engineered for good efficiency, this pump core features a high-pressure piston system that ensures thorough cleaning. Its transparent plastic body not only adds a sleek appearance but also allows for easy inspection. Suitable for both personal and professional applications, it enhances overall oral health. Features -Color:Transparent -Material:Engineering plastics -Size:15.70X2.90X2.90cm/6.17X1.14X1.14in -Water inlet outer diameter: 4 mm -Efficient debris removal: the highpressure pump core effectively eliminates food particles and plaque, promoting healthier gums and teeth -Transparent monitoring: the clear plastic pump structure allows users to visually track water flow for better results -Stable piston technology: engineered with piston pump mechanics, this accessory ensures smooth operation and dependable performance -Portable convenience: designed for easy transport, this pump core is suitable for maintaining oral care at home or on the go -Special the dc brushless core enhances durability and efficiency, making it a reliable choice for water flossers Package list: 2 x tooth washing pump cores