Gong Target AR500 8" Inch Diameter - 3/8 Inch Thick Armour Steel Plate With Hanging Chain Kit - Unpainted (FREE SHIPPING!) 8" Diameter 3/8" Thick Armor AR500 with Hanging Chain Kit with 3/8" diameter bolts. The holes in the Gong's ears are for 3/8" diameter bolts. Chain 12 Inches Long "Proof Grade Chain" with Two "Grade 5" Harden 3/8" Diameter Bolts in Gongs Ears Also included are two "Grade 2" 2.5 x 3/8 inch diameter bolts for mounting to a 2"x 4" Board Lumber "Board Lumber Not Included" Face of Gong is tilted downward approximately 10 degrees. 2" x 4" Board Lumber Not Included, Only Gong and Chain Hanging Kit.