QINGGE cello strings are suitable for size 4/4 & 3/4_1/2_1/4&1/8. <br>It is made of high Aluminum-magnesium alloy to avoid oxidation and have strong durability.these cello strings are optimized to the needs of a majority of players.<br>Give you a different sound quality to enjoy<br> A_1st .026 inch 0.66 mm Aluminum-magnesium alloy<br> D_2nd .033 inch 0.85 mm Aluminum-magnesium alloy<br> G_3rd .053 inch 1.33 mm Aluminum-magnesium alloy<br> C_4th 0.70 inch 1.77 mm Aluminum-magnesium alloy<br> Package Includes:1 set A_1st D_2nd G_3rd C_4th <br> Packaged in uniquely-designed sealed pouches providing unparalleled protection from the elements that cause corrosion.<br> Warranty:Normally we offer a six-months after sales service.<br> We will provide professionally technical guidance and perfect after-sales service.<br> Please don’t hesitate to contact with us anytime.