This would be perfect for using as a stamp with ink or for stamping clay etc.
This stamp is the Kanji (Chinese character) for "交" "majiwaru / kou" = "mix, intersect, # exchange, communicate, deliver".
It measures 2cm long (long enough to be able to get a nice grip) and 1.5cm wide. The Chinese character itself is about 1.5mm wide. It is made of metal.