Vibrant 3-1 Merge Collector 1.50in Inlet ID 2.00in Merge OD 2.00in Outlet ODVibrant Performance Merge Collectors feature complete 16 gauge, 304 Stainless Steel construction, precise fabrication and back purged TIG welds at every seam. Each Vibrant Performance collector is ready to weld straight out of the box with little or no prep required. Sold individually. 3 1 Merge Collector; 1. 50 in. Inlet I. D.; 2. 0 in. Merge O. D.; 2. 50 in. Outlet O. D.; 6. 875 in. Overall Length;