The filter with Release Valve Prevent Gas Reflux ; The male connector : M10*1 & 8mm , the soft hose female connector : M10*1 & 8mm makes it easy for you to disassemble without wasting time; Ultra-strong filtering of oil and water, does not corrode the container; Applicable to all air pumps, pumps, and ultra-strong filters on the market. Space aluminum is mainly used, and the surface is golden anodized. About 90-95% of water and oil can be filtered out.