1,[2PCS IN 1 SET] Including 2pcs clarinet barrels with length of 58mm, which are good replacement parts for clarinet. 2,[MAIN PURPOSE] The treble Bb clarinet barrel is used to improve the pitch focus and intonation, making the tone more excellent. 3,[EXCELLENT MATERIAL] Made of excellent metal and engineering plastics, glossy surface without cracks and burrs. 4,[EASY TO INSTALL] These clarinet tuning tubes are small and compact, easy to install and do not take up space. 5,[REPLACEMENT PARTS] Can directly replace the old or broken clarinet barrel to ensure the good operation of the clarinet. Item Type: Clarinet Tuning Tube Material: Metal and Engineering Plastic Color: Black and Silver Size: Approx. 58mm / 2.3in 2 x Clarinet Barrel Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.