The Metal : High quality 18 Brass. Inner Diameter : Front to back 9 inches approx. Ear to Ear : 8 Inches approx. Circumference : 26.69 inches (approximately). Can it be used for Reenactment? Size : The Size of this Helmet is a Standard Adult Size that. This item is in the category "Collectables\Militaria\Ancient/ Medieval (Pre-1500)". The seller is "nautical*manufacturer" and is located in this country: IN.