... /minSize:142*90*80mmAir Compressor Features:1,Compact structure nice outlook by aluminum shell with high quality.2,No air pallluted and ni lubricant ... and longer life by the imported.4,Material with high quality used to its air house and piston.5,Different styles available with ... for ponds,restaurants,aquaria and transportion for fish ect. Piston Air Compressor Oil-free