Features:Brand new and high qualityThis mechanics sonar scope helps isolate engine problems by letting you 'hear' inside engine.Quality chromed-steel construction with soft PVC hose and probeDetectable frequency range: 10HZ--10KHZAnti-shocked designMaterial: Rubber & Plastic & Stainless SteelProbe Length: Approx. 30cmProbe Diameter: Approx. 0.33cmWeight: Approx. 110g Package Contents:1 * Engine Analyzer