Musical Pitch Pipe helps you find exact musical pitch time Chromatic Pitch Pipe are made with precision-tuned, heavy giving you an exact standard A sturdy chrome plated, full octave circular type chromatic pitch pipe with pitch selector Circular Pitch Pipe is ideal for most instruments and attractive supplied in the plastic case With A, B, C, D, E, F, G to select: Size of the Pitch Pipe: 6.4 (diameter) x 1.1(thickness)cm The white plastic note selector to focus breath on the note and includes a black plastic case. Circular Pitch Pipe is ideal for most instruments and attractive supplied in the plastic case. Package include: 1 x Pitch Pipe Note:Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.