Viola Strings Viola Strings are suitable for all sizes. It is made of high quality stainless steel core to avoid oxidation and have strong durability. these violin strings are optimized to the needs of a majority of players. Give you a different sound quality to enjoy A_1st High quality aluminum-magnesium alloy D_2nd Stainless steel wire core, aluminum-magnesium alloy wound G_3rd Stainless steel wire core, aluminum-magnesium alloy wound C_4th Stainless steel wire core, aluminum-magnesium alloy wound Package Includes:1 set Viola Strings Packaged in uniquely-designed sealed pouches providing unparalleled protection from the elements that cause corrosion. Warranty:Normally we offer a six-months limited warranty. We will provide professionally technical guidance and perfect after-sales service. Please don’t hesitate to contact with us anytime.