Jumper cables with valve plug are specialized industrial accessories, typically associated with pneumatic systems and fluid control applications. While not a specific brand name, this product category is commonly offered by manufacturers in the industrial automation and fluid power sectors, such as Festo (Germany), SMC Corporation (Japan), or Parker Hannifin (USA). These components are used in industries like manufacturing, automotive, and aerospace for quick-connect pneumatic line installations, air brake systems, or hydraulic applications. The valve plug design allows for rapid connection/disconnection of pressure lines, often featuring standardized fittings like NPT or BSPP threads. Leading suppliers like Grainger or Radwell distribute these cables as part of their industrial maintenance and MRO product lines.