and high quality The high pressure air pump filter elements adopts the compact density filter Large size, water absorption, good water absorption, free of frequent change, can be used again after cleaning Safe voltage:30MPa Cleaning : The filter elements is soaked in diluted detergent water. After the filter elements is filled with water, remove and then dry and then soak into the detergent water. Repeat air drying several times. Do not squeeze or rub. Extrusion will result in desuitable formation of the filter core and poor dewatering. colour:White Material:Fiber cotton size:35 x 20mm Package Contents: 50 x High Pressure Pump Filter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.