Material:Zinc, copper. -Size(zinc flakes):4.00X1.00X0.08cm/1.57X0.39X0.03in. -Size(copper sheet):4.00X1.00X0.03cm/1.57X0.39X0.01in. -RealWorld Application: The conductive electrode sheet and copper battery strip teach practical skills and realworld science, supporting teachers and students in reaching curriculum goals.