Pirastro Tonica Violin Strings
The standard 4/4 set contains; Plain Steel E, Aluminum A, Aluminum D and Silver G. Optional strings; Aluminum Wound E for warmer tone balance but slower bow response, Silver D for warmer tone balance compared to the Aluminum D and greater resistance to corrosion from perspiration. The Silver D is standard in fractional sized sets, and the Aluminum D is not available. 
Tonica nylon-core strings deliver a lively, warm, balanced sound with updated design in late 2008 for improved brilliance, projection, pianissimo control, and reduced surface string noise. Quick response, smooth crossings, easy articulation, and stable performance across temperature and humidity suit all instruments and playing positions. Lifespan is not as long compared to composite core brands such as Evah Pirazzi. Tonica compete directly with Thomastik Dominant, but at a lower price point making them an appealing choice. Medium gauge only. Pirastro has discontinued the Weich and Stark gauges. Choice of Loop or Ball end in 4/4 size. Fractional size E strings are Ball end only.
String Identification Chart:
Pirastro Tonica Strings are played by noted musicians; Aaron Rosand (uses Silver D)