Manufacturer: Butterfly Name: Butterfly Primorac Speed: 77 Control: 88 Stiffness: 45 Hardness: 49 Frequency (Hz):   Thickness (mm): 5,7 Weight (g): 90 Length (mm):   Width (mm):   Layers: 5 Layer Compostition: Limba - Limba - Ayous - Limba - Limba Aktion: Ändern