This listing is for a vintage tenor sax end plug. I do not know what brand/model horn this came from. It is made of heavy gage brass. The exterior diameter is 1 & 3/32nd's of an inch (1.0975", or 27.85mm). Please note that there is no step/ledge to this one...it is the same diameter from top to bottom, except for the small decorative indent groves. The total height is 1 & 21/32nd's of an inch (1.66" or 42.15mm). This plug is in excellent condition. It is not bent out of shape or dented. The brass is unlacquered, so it has developed a patina.