Mini One Touch Negative Pressure Filter Zfc Series Generator in-Line Air Suction Filters. One-Touch Fittings: Easy installation and replacement without tools for metric and inch sizes. Dual Pressure Function: One unit offers both positive and negative pressure capabilities. High Visibility Element: Blue element (X03) makes white foreign matter easy to see. Compact & Lightweight: Light weight and compact design for pneumatic vacuum equipment. 100% Quality Inspection: 100% visual and function inspection before delivery. CE, ISO, RoHS Certified: Meets international safety and quality standards. Low Noise Operation: Designed for low noise level performance. Fast Delivery: Conventional products ship within 3-7 days.