Package Include 6 x Wave Makers Characteristics - Color: Grey - Material: Plastic - Size: 6.50X4.00X4.00cm/ 2.55X1.57X1.57inch - The propeller design is powerful and the power flow is large, very professional. - Multi- angle rotation adjustment, and dense filter cover prevents fish from inhaling. - Anti- reverse slot protection motor, and powerful suction of various chassis. - Made of premium and sturdy plastic material, and durable to use. - The product design conforms to the ergonomic design and is easy to use. Goods Information This is a professional fish tank wave pump head, the product quality is high, the material is. Create 360° waves to effectively agitate the water in the tank. Suitable for most fish tanks and aquariums. And it can be your best choice.