Vibrant Performance 3-Bolt Stainless Steel Flange 3"

3/8 Thick Stainless Steel 3 Bolt Flange

matching gasket available - https://www.waltonmotorsport.com/product/vibrant-performance-3-bolt-high-temperature-exhaust-gasket/

105.4mm Width x 105.4mm Height x 86.9mm Bolt Hole Circle x 9.5mm Thick (3"ID)