PETER INFELD Pi Violin String Set PI101

1E: PI01SN Chrome steel/tin plated 2A:PI02 Synthetic core/aluminum winding 3D:PI03A Synthetic core/silver winding 4G:PI04 Synthetic core/silver winding The E string has a ball end only, but it is designed so that the ball can be removed and made into a loop end if necessary, so it is compatible with ball and loop.