This is the 64P 78T Precision Diff Gear from Kimbrough. FEATURES: Nylon construction Black in color YOU WILL RECEIVE: One Precision Diff Gear REQUIREMENTS: Installation on vehicle SPECIFICATIONS: Outer Diameter: 31.4mm (1.24") Inner Diameter: 9.5mm (0.37") Width: 5.3mm (0.21") Pitch: 64 Tooth: 78 lmm 11.20.09 ir/jxs &