1.Compatible with multiple air compressor brands such as Craftsman, DeVilbiss, Porter Cable, etc., easily replaces models like DAC-308, K-0650, K-0058, KK-4835, etc. 2.Item Type: Air Compressor Replacement Parts, designed for drilling, bolting, spraying, air brushing, nailing, inflating tires, and powering pneumatic tools 3.Style: Portable, ensures easy handling and storage 4.Outside (OD): 2-9/16"Inside (ID): 1-7/8",Suitable for Oil-less 2-3/8" Cylinder Bore Machine 5.Made of wear-resistant materials, the piston ring ensures stable performance and life over a long period of use