Manufacturer: Butterfly Name: Butterfly Innerforce ALC Speed: 88 Control: 91 Stiffness: 53 Hardness: 56 Frequency (Hz):   Thickness (mm): 5,9 Weight (g): 90 Length (mm):   Width (mm):   Layers: 7 Layer Compostition: Limba - ALC - x - X - x - ALC - Limba Aktion: Ändern