Thomastik has been making these "rope core" (a style of winding, not what they're made of!) strings for a couple of years, and I must say that we're pretty high on them right now -they’reon Bob's Kay, and he's really loving them for both pizz and arco. They’ve been designed for bowed work, but they have a very musical, warm pizz sound with a very sweet sustain. Their bowed feel and quick response is wonderful. They are also available in a solo gauge string, which we have on a separate page.
String details from the manufacturer, Thomastik Infeld: