The K-0650 Cylinder and Piston Ring Replacement kit will fit both the single cylinder oil-free pumps and the twin cylinder oil-free pump made by DeVilbiss, Porter Cable, Sears Craftsman, Snap On, Ex-Cell, Air America, Charge Air Pro, Grainger, Stanley Black&Decker K-0650 Compression Ring Kit compatible Craftsman Black and Decker DeVilbiss Porter Cable Compressor Cylinder dimension: Inside Diameter: 2.365 inch; Outside Diameter: 2.495 inch; Outside Shoulder: 2.945 inch; Total Height: 1.980 inch Replace Part Number: K-0650 Material:Metal + plastic :Silver Package Contents: 1 x D25837 coated cylinder liner 1 x DAC-308 coated oil-free piston ring 1 x SSF-3158-1 piston rod cap screw 1 x SSG-8156 valve plate to cylinder liner O-ring 1 x ACG-45 cylinder head to valve plate O-ring Only the above package content, other products are not included. Note: Light shooting 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.