This is brand new unused aftermarket OEM parts and it is compatible with Ingersoll Rand Air Compressor Part for 2340 Piston Bare Assembly HP Piston 32496606 . Please refer #12 in picture. ****Please note, picture shows in listing is just diagram for your reference. This kit include part #12 from the diagram **** This is not a Ingersoll Rand product but it is compatible with Ingersoll Rand Parts. This is a Private-label product.