Walker 3-1/2 Inch Steel Exhaust Clamp - 33311 Part #: 33311 Line: WAL Walker 3-1/2 Inch Steel Exhaust Clamp 1 Year Limited Warranty Clamp Type: Butt Joint Diameter (in): 3-1/2 Inch Material: Steel Nut Type: Hex Color/Finish: Satin Saddle Gauge (ga): 23 Gauge U-Bolt Diameter (in): 7/16 Inch Saddle Hole Shape: Round Show More Show Less