ITEM NAME:3pcs DC 12V Mini Low Noise Diaphragm Self-Priming Water Pump Vacuum Suction Pump Descriptio n Features: Long Life, Energy Saving, Quiet, Strong Torque, Stable Performance Specifications: Material: High-Grade Plastic, High-Quality Stainless Copper, High-Quality Copper Wire, Etc. Color: White Size: 27mm Parameter: Principle: Vacuum Pump Vacuum Degree: High Vacuum Drive Mode: Electric Performance: Wear Resistant Uses: Booster Pump, Metering Pump Conveying Medium: Air Power: 1.5 (kw) Ultimate Pressure: -75k (Pa) Pump Shaft Position: Horizontal Pumping Rate: 50ml (L/S) Pumping Capacity: 3.5L Maximum Working Pressure: -70kpa Voltage: 5 (V) Outlet Diameter: 52 (mm) Head: 1.5 (M) Flow Rate: 0.048-0.21 (M3/H) Rated Voltage: 12V Rated Power: 0.005W Package Included: 3 * Self-Priming Water Pumps Honesty is gold for all! 3pcs DC 12V Mini Low Noise Diaphragm Self-Priming Water Pump Vacuum Suction Pump