J-Mac Tool, Inc. is a manufacturer based in Fort Worth, Texas, specializing in well service pumps and fluid ends for the oil and gas industry. Founded in 1986, the company produces a comprehensive range of equipment, including fracturing pumps, power ends, and water transfer trailers, alongside expendable parts such as valves, seats, packing, plungers, and seals. J-Mac Tool is recognized for its expertise in well stimulation and flow control, offering repair and refurbishment services for various brands of service equipment. In addition to manufacturing, the company provides machining, metal fabrication, testing, engineering, and magnetic particle inspection services. J-Mac Tool also serves other industries, including petroleum, railroad, and medical equipment manufacturing, with service centers located in Fort Worth, Midland, and Pleasanton, Texas.