Description Are you looking for a professional, yet affordable automobile exhaust back pressure tester? Are you in search of a sturdy, trustworthy tool that can do multiple jobs? If yes, look no further! Our professional tester, made of premium material, must meet you needs. It is one of the best choices for you. Features - Color:Assorted.- Material:High Temperature Resistant Rubber, Stainless Steel, Copper.- Size: About60.00X8.00X3.00cm/23.58X3.14X1.18inch.- This item with fine workmanship and is easy to use.- The product detection accuracy is relatively accurate.- Affordable and reasonable price is always served by us.- The product can give full play to the function of automobile emission detector.- It enables technician to test exhaust back pressure through oxygen sensor adapter.Packing list: 1 x automobile exhaust back pressure tester