These cello strings are manufactured with the most stringent quality control, with high quality steel core, aluminum magnesium wound, nickel-plated ball end, they are durable. They can produce a clear warm tone, it is a good choice for learner & player & performer of cello, they are suitable for cello size 3/4,4/4. <br> <br> <b>Cello strings Specifications:</b><br> <b>A-1st</b><br> Materials: steel core aluminum magnesium wound Diameter: 0.028inch(0.7mm)<br> <b>D-2nd</b><br> Materials: steel core aluminum magnesium wound Diameter: 0.032inch(0.8mm)<br> <b>G-3rd</b><br> Materials: steel core aluminum magnesium wound Diameter: 0.051inch(1.3mm)<br> <b>C-4th</b> <br> Materials: steel core aluminum magnesium wound Diameter: 0.069inch(1.75mm)<br> <br> <b>Length:</b> 3.6ft(1.1m)<br> <br> <b>1 Package including:</b>1set（4pcs cello strings）& 1 piece blue cleaning cloth<br> <br> <b>Package size:</b> 6.5 x 5.9 x 0.14inch(16.4 x 15.1 x 0.36cm) <br> <b>Cleaning cloth size:</b> 9.4 x 9.0inch(24 x 23cm)