T-Bobbin (C), Rotor Attachment Complete Hardware KitT Bobbin (C) rotor attachment complete hardware kit for floating 2 piece rotors Corrosion resistant, allows secure mounting, and smooth expansion and contraction throughout heat cycles This complete kit includes enough hardware for two rotors. Includes: 24 (enough for a pair of 12 bolt rotors) 1 4 UNF aerospace grade Geomet coated bolts Locking nuts T Bobbins (C) Assemble torque specs: 10. 5 lbf ft 14 Nm Fits: Ginetta G55 GT4 Replacement of: Alcon