[Product Type]: This is a wind instrument repair tool, specifically designed for the maintenance of saxophones and flutes. It's an essential tool for musicians and instrument repair professionals [Measurement Range]: The tool features two sets of measurements, ranging from (2,4,6,8,10,12) mm and (3,5,7,9,11) mm respectively. This wide range allows you to accurately measure the opening height of your [Material]: Made from Metal material that ensures and reliability in use. It's designed to withstand regular use without losing its precision [Compact Size]: This tool is compact and making it easy to carry around in your instrument case or toolkit Colour:Photo Color Material:Metal Package Contents: 1 x Measuring Tape Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.