This saxophone bells mandrel tool adapts to four diameter sizes (11/13, 14/16, 22/24, 25/27), performing bells expansion, shaping, metalwork, and mouthpiece rounding tool, reducing the need for multiple tools. Crafted with precisions metalworking technology, it accurately corrects saxophone bells mouthpiece deformations, restoring original curvature and air tightness for improved tonals stability during play. Make of high hardness alloy steel with antislip knurled texture for a secure grip, ensuring long term durability without wear or deformation, ideal for professional repairs. Measuring just 11.4×3.5CM and weighing only 252 grams, this light weight tool is portable and requires without additional equipment, enabling quick solos repair. Package includes: 1pc Saxophone Neck