Compatible with both the single cylinder oil-free pumps and the twin cylinder oil-free pump of the following model Oil-Free air compressors: Fits for Deviliss; Fits for ; Fits for ; Fits for ; Fits for Snap On; Fits for ; Fits for Air America; Fits for Charge Air Pro; Fits for Grainger; Fits for and and many other privately labeled air compressors. Fits model number 165080. Direct replacement for part number K-0650 both in quality and functions. Specially designed to easily & properly service the oil free air compressor pumps for cylinder, extends the life of the compressor and saves your money for a new one. (Recommended on Twin Cylinder Air Compressor Pumps that both cylinder sleeves and piston rings be replaced at the same time so that the air compressor pump produce equal air output and not be out of balance.) This Compression Ring Kit contains 5 parts: 1 x D25837 Coated Cylinder Sleeve, 1 x - Coated Oil Free Piston Ring, 1 x SSF-3158-1 Piston Rod Cap Screw, 1 x -8156 Valve Plate to Cylinder Sleeve O-Ring, 1 x ACG-45 Cylinder head to Valve Plate O-Ring. The cylinder sleeve is made from high strength STEEL for wear and rust resistance, hardened to tough and high pressure withstand. The piston ring and O-rings are made from top quality RUBBER, help seal the cylinder and provide great airtightness, features with long term reliable service. Colour:Random Color(The color is random, and the designation is not accepted) Material:Metal Package Contents: 1set * for compressor parts(The color of accessories is random, and the designation is not accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.