MSD Ignition Cap-A-Dapt Cap And Rotor Features: Adapts A Large Style Cap Onto Your MSD Distributor Spark Plug Terminals Spaced Farther Apart Prevents Crossfire Will Not Vibrate Loose Incredible Strength/Resistance Thicker Vanes To Prevent Ionization Adjustable Rotor Tip Brass Terminals/Rotor/Cap Height: 5.00 Width: 5.00 Length: 5.00 Weight: 0.60 lbs