1 2Pcs M6 M8 M10 M12 U Screw 304 Stainless Steel Clamp U Bolt U bolts|Bolts| - AliExpress
Amazon.com: 3" U Bolt Saddle Exhaust Clamp - Zinc Plated Flat Band : Everything Else
Amazon.com: Complete your exhaust repair with an Exhaust Mate U-bolt clamp. Designed to ensure a tight, leak-resistant connection, Exhaust Mate hardware is manufactured from durable and robust material for long service life. :