Pirastro Synoxa 4/4 Violin String Set - Medium Gauge with Ball-end E Full Set includes Steel Medium Gauge Ball-end E, Aluminum Winding - Perlon Core Medium Gauge Ball-end A, Aluminum Winding - Perlon Core Medium Gauge Ball-end D, and Silver Winding - Perlon Core Medium Gauge Ball-end G 4/4 violin Medium gauge