This is an optional Tekno R/C Rear M6 Driveshaft Kit for the Traxxas Slash 4x4. FEATURES: Nylon and hardened steel construction Black in color YOU WILL RECEIVE: Two 1.5degree nylon hub carriers Two hardened steel drive cups Two nylon 12mm wheel hexes Two 6x12x4mm bearings Two 0.5 degree nylon hub carriers Two 10x15x4mm bearings Two hardened steel CVAs Instruction sheet REQUIREMENTS: Installation on the Traxxas Slash 4x4 lmm 6.17.10 ir/jxs &