ITEM NAME:Car diagnostic tools Block Stethoscope Automotive Detector Diagnostic tool LJLJ Car diagnostic tools Block Stethoscope Automotive Detector Diagnostic tool LJLJ a.imagelink a:hover.imagelink {color:#60000;.Material: Rubber & Plastic & Stainless Steel. Weight: Approx. Probe Length: Approx. Anti-shocked design. Detectable frequency range: 10HZ--10KHZ.