Thomastik Spirocore for ViolaSpirocorestrings have a flexible multiwire spiral rope core. They offer a longer period of musical vibration and significantly reduce inertia.Spirocorestrings are equally effective when playing arco or pizzicato. They are highly responsive and long lasting.Available Sizes | Gauges4/4 | light, medium, heavy1/2 | medium38 | medium39.5 | medium42 | mediumClickhere to download the Thomastik guide / glossary of termsViola 4/4vibrating string length37cm | 14.6"usable from 36cm / 14.2" up to 37.5cm / 14.8"LIGHTMEDIUMHEAVYNR.Core MaterialOuter MaterialTailpiece EndkglbPeg EndkglbPeg EndkglbPeg EndDTS17alaISpiral CoreAluminum Wound7.115.78.017.68.619.0DTS18alaISpiral CoreChrome Wound7.115.78.017.68.619.0DTS19dreIISpiral CoreChrome Wound6.414.17.115.77.717.0DTS19AdreIISpiral CoreAluminum Wound6.414.17.115.77.717.0DTS20gsolIIISpiral CoreChrome Wound6.013.26.815.07.215.9DTS20AgsolIIISpiral CoreSilver Wound6.013.26.815.07.215.9DTS21cdoIVSpiral CoreSilver Wound5.512.16.414.16.815.0DTS22cdoIVSpiral CoreChrome Wound5.512.16.414.16.815.0DTS24cdoIVSpiral CoreTungsten Wound5.512.16.414.16.815.0SET NR. DTS23DTS18; DTS19; DTS20; DTS22LIGHT25.0 kg | 55.1 lbMEDIUM28.3 kg | 62.4 lbHEAVY30.3 kg | 66.9 lbClickhere to download the Thomastik guide / glossary of termsDownload thefull comprehensive Thomastik catalogue