These are the optional A-Arms (Supension Arms) for the Traxxas Nitro Rustler 
           These mount to the bulkhead and the hubs mount to it.               
                                                                               
FEATURES: Heavy Duty Nylon Construction                                        
          Blue in Color                                                        
          One Pre-Drilled Shock Mounting Positions                             
          For the Rear of the Nitro Rustler                                    
                                                                               
INCLUDES: Two Rear Blue A-Arms                                                 
          One RPM Decal Sheet w/ Two RPM Logos                                 
                                                                               
REQUIRES: Assembly onto Vehicle.                                               
                                                                               
SPECS:    Length: 3.6" (91mm)                                                  
          Width at Bulkhead: 1.8" (45mm)                                       
          Width at Hub: 1.15" (29mm)                                           
          Thickness: .31" (7.8mm)