THIS IS A CHROME 6" INSIDE DIAMETER U-BOLT CLAMP. IT IS A 7/16" FLAT U-BOLT. IT CAN BE USED AS A MUFFLER CLAMP OR ANY OTHER APPLICATION THAT HAS A ROUND 6" OUTSIDE DIAMETER PIPE. THE MOUNTING BRACKET IS 7 1/4" WIDE AND 3 11/16" TALL. IT HAS A 3/8" DIAMETER SCREW ON LOCK WASHER /NUT. NEW. BULK PACKAGING. EACH.