[Copper Quick Coupler Connector] the oil and water filter have come with coupler connector, which makes disassembly and assembly faster and easier to use. [99.9%] It can filter oil and sewage vapor and remove odor, and the filtering effect is 99.9%. [Two-layer filter] Double-layer filter device setting, sponge; filter cotton swab. [Safety guarantee] The product shell is made of aviation aluminum, with stable structure, safety and high pressure resistance, which can resist Normal value 30MPA/Max 45MPA pressure. [Application field] A perfect and practical replacement parts for Hand Operated Air pump, PCP, high pressure Air Compressor, etc.