The PIRASTRO EUDOXA violin string set is available with different E strings: steel, steel or steel/aluminium and also with ball or loop, all medium-gauge.
E = medium
A= 13 3/4
D = 16 3/4
G = 15 3/4
For fractional sizes (3/4 - 1/2) the E string is only available as a steel sting with ball.