The Sealey VS200/A is a long reach compression tester adaptor designed to enable access to deep-seated spark plugs during engine compression testing. This specialist tool addresses the common challenge of reaching recessed plug locations on modern engines where standard compression tester hoses cannot connect directly. Featuring a valved extension design, this adaptor maintains accurate pressure readings whilst providing the additional reach required for awkward access points. The M14 main thread is supplied with two additional thread adaptors in M10 and M12 sizes, ensuring compatibility with the majority of petrol engines found in modern vehicles. Ideal for automotive technicians and mobile mechanics who regularly perform engine diagnostics, this adaptor extends the capability of standard compression testing equipment. The compact and lightweight design makes it a practical addition to any diagnostic toolkit, whilst the multiple thread sizes eliminate the need to carry separate adapto