Features 1、The piston has a diameter of 80mm, which is suitable for air compressor connecting rods or air pumps. 2、The overall structure is small and compact, light in weight, easy to install, and flexible to move. 3、Made of aluminum material, it has anti-oxidation and corrosion resistance, and has good heat dissipation performance. 4、The cylinder head adopts die-casting technology, streamlined design, beautiful appearance, and can be replaced perfectly. 5、After heat treatment and surface quenching, it has excellent comprehensive mechanical properties. Specification Item Type: Air Compressor Piston Material: Aluminum Purpose: Piston air compressor, air pump piston Length: Approx. 63mm / 2.5in Diameter: Approx. 80mm / 3.1in Aperture: Approx. 15mm / 0.6in Package List 1 x Air Compressor Piston