Assembled with 1/8 in zinc plated rivets|Diameter can vary +/- 1/2 in depending upon how loose or tight the tip is located on the strap|5/16 in hex head with NO two phillips drive
Heating & Cooling Products Storm Collar, Series: 984, 10 in Size, 14-1/2 in Diameter, 24 ga, Steel, Hot Dipped Galvanized