This product is an automobile exhaust back pressure tester. It is made of rubber, stainless steel and copper materials. It is safe and practical, and has excellent texture. It provides you with a simpler detection method and more accurate detection results. Universal structural design, professional and practical, and widely applicable, it is very suitable for detecting the condition of automobile exhaust pipes. Features -Color:Assorted Color. -Material:Stainless Steel, Copper, Rubber.-Size: About60.00X6.00X3.00cm/ 23.58X2.36X1.18inch.-Note:Random style of the plug part.-Fine workmanship, excellent texture, simple and practical, it can test the front pressure of the catalytic converter to determine whether the exhaust is blocked.-Fast and accurate, time-saving, precise and efficient, it will be your best choice for testing tools.-Reasonable structure, simple operation, convenient application, can help you test quickly and accurately.-The tester can complete your test work well and help you better understand your car information.-This is a very professional and durable automotive exhaust back pressure tester suitable for most vehicle applications on the market. Packing list: 1 x tester