A string</br>4/4 violin</br>Medium guage</br>Aluminum Winding - Perlon Core</br>Ball end</br></br>Product Description</br></br>Dominant series violin strings are one of the most widely-used synthetic strings. A highly flexible, multi-strand nylon core makes these comparable in sound and feel to natural gut. The E string is aluminum/steel or plain steel, ball or loop end.</br><br/>http://www.amazon.com/gp/product/B000E1VOMI