This is a Sun (Snap On / John Beam) replacement "OEM Style" Sample Probe for testing vehicle tailpipe emissions. This tailpipe sample probe features a Braided Steel construction identical to the Original Manufacturer (OEM) probe. This is sample probe is popular for higher volume shops as it offers similar consistency of operation to the OEM product. This high quality emissions sample probe is manufactured here in the United States and is Bar 97 approved. When you buy this product from Emissions Depot, you are guarrenteed the highest quality Bar 97 approved (Made in USA) product.