SE GP3-19CP 9-1/2" Brass Coin Probe Overall length: 9-1/2 Rod size: 6-1/4 Thickness: 5 mm Material: non-marring brass Great tool for treasure hunting, coin collecting, gold panning, and more Overall length: 9.5 Rod size: 6-1/4 Thickness: 5 mm Material: non-marring brass Great tool for treasure hunters, coin collectors, gold panning, etc.