Features:1. Made of high quality stainless steel string, smooth and durable for you to use.2. New phosphor copper colored copper alloy string, make the sound crisp and full.3. Adopt fine workmanship and delicate design, easy and convenient for you to use.4. Professional environmental protection and anti-rust technology, make it anti-oxidation and anti-rust.5. A set of 6 strings: E-1st, B-2nd, G-3rd, D-4th, A-5th, E-6th, suitable for acoustic guitar. Specifications:Material: Stainless Steel Mercerized StringColor: As Pictures ShownString Thickness: E-1st: Approx. 0.22mm/0.009inB-2nd: Approx. 0.29mm/0.012inG-3rd: Approx. 0.36mm/0.015inD-4th: Approx. 0.61mm/0.025inA-5th: Approx. 0.85mm/0.035inE-6th: Approx. 1.10mm/0.045inPacking List:String1E*12B*13G*14D*15A*16E*1.