Vibrant Performance 3-Bolt Stainless Steel Flange 3.5"

3/8 Thick Stainless Steel 3 Bolt Flange

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

111mm Width x 109.5mm Height x 95.6mm Bolt Hole Circle x 9.5mm Thick (3.5"ID)