D'Addario Prelude Cello String Set, 4/4 Scale, Medium Tension 15 Ernie Ball is the pioneer

Ernie Ball is the pioneer of rock and roll guitar strings

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Equipped with Bluetooth V4

protective carrying case

A gig bag and nylon strings are included with all Penguin series ukuleles

D'Addario Prelude Cello String Set, 4/4 Scale, Medium Tension 15 Ernie Ball is the pioneer4 4 size cello with a playing length of 27 1 2 inches (700mm) Medium tension Solid steel core optimized to create the warmest sounding student strings available Educator's preferred choice for student strings due to their unique blend of warm tone, economy, and durability All D'Addario strings are designed, engineered and manufactured in the USA to the most stringent quality controls in the industry Scaled to fit 4 4 size cello with a playing length