Larsen Aurora strings Solid steel core, A & D stainless chrome-steel alloy wound, G nickel wound, C tungsten wound. Warm, brillant sound without metallic overtones 1/4 Cello (545mm scale/21.5 inch scale) A, Steel core wound with chrome steel, 1/4 Medium tension 13.9kg/30.6lbs D, Steel core wound with chrome steel, 1/4 Medium tension 11.8kg/26.0lbs G, Steel core wound with nickel, 1/4 Medium tension 10.0kg/22.0lbs C, Steel core wound with wolfram, 1/4 Medium tension 10.7kg/23.6lbs Set medium tension 46.4kg/102.2lbs