1、Fitment: The air compressor cylinder comp ring kit fits for CPFC2TV3520W 3.5 HP 20 Gallon Compressor, replacement for DeVilbiss Compressor, replacement for Craftsman. 2、Function: Direct replacement for the original cylinder comp ring kit to rebuild the air compressor pumps and extend the life and performance of the compressor. 3、High Performance: The piston ring and O rings are made from strong sealing material, help seal the cylinder and provide great airtightness, with long service life. 4、Durable Material: The air compressor cylinder sleeve is made of high strength metal alloy material, which is wear resistant, deformation proof, anti aging and durable. 5、Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency.