This is a cornet button buckle made of copper and stone, which is sturdy and durable. The surface is smooth and the color looks good. It must be very beautiful with your instrument. A set of three, light weight and small size, can be carried with you and replaced at any time. It is a good preparation for the performer. Features - Color: Sky Blue. - Material: Copper, - Size: 1.50X1.50X1.00cm/0.59X0.59X0.39in - Made of premium and copper material, practical and durable to use. - Great present for musical instrument player, they will be very happy. - Excellent and durable, can be applied for a long time, sturdy and durable. - the replacement of trumpet and other musical instrument's button. - Great musical instrument buckle and repair tool. They can be used as new tools to replace the old ones. Package list: 3 x Cornet Button Buckles