Thomastik Spirocore for CelloFlexible multiwire spiral rope core. Less inertia, longer period of musical vibration. Equally effective when playing arco or pizzicato. Highly responsive, long lasting.Spirocorestrings, widely recognised as"the reference standard", are legendary for distinctive tone and playability.Available Sizes | Gauges4/4 | light, medium, heavy3/4 | medium1/2 | medium1/4 | mediumClickhere to download the Thomastik guide / glossary of termsCello 4/4vibrating string length70cm | 27.6"LIGHTMEDIUMHEAVYNR.Core MaterialOuter MaterialTailpiece EndkglbPeg EndkglbPeg EndkglbPeg EndDTS25alaISpiral CoreChrome Wound14.030.914.832.616.035.3DTS27dreIISpiral CoreChrome Wound13.529.814.331.515.033.1DTS27AdreIISpiral CoreAluminum Wound13.529.814.331.515.033.1DTS28GSolIIISpiral CoreChrome Wound13.028.714.030.914.532.0DTS28AGSolIIISpiral CoreSilver Wound13.028.714.030.914.532.0DTS32GSolIIISpiral CoreTungsten Wound13.028.714.030.914.532.0DTS29CDoIVSpiral CoreChrome Wound12.327.113.529.814.030.9DTS30CDoIVSpiral CoreSilver Wound12.327.113.529.814.030.9DTS33CDoIVSpiral CoreTungsten Wound12.327.113.529.814.030.9SET NR. DTS31TWIN SET NR. DTS32S33DTS25; DTS27; DTS28; DTS29DTS32; DTS33LIGHT52.8 kg | 116.5 lbMEDIUM56.6 kg | 124.8 lbMEDIUM27.5 kg | 60.7 lbHEAVY59.5 kg | 131.3 lbClickhere to download the Thomastik guide / glossary of termsDownload thefull comprehensive Thomastik catalogue