This is a hagibachi (plectrum) for Gidayu shamisen. It appears to be made of natural material, but the exact material cannot be determined, so please check the photos. There is a small gap near the saijiri (butt) (see photo 3). No returns. Length: Approximately 248mm Width of plectrum tip: Approximately 81mm Thickness of plectrum tip: Approximately 6mm Saijiri: Approximately 23 x 33mm Weight: Approximately 241g (with some margin of error)